Ответы:

• 1) to be
• 2) ask
• 3) is
• 4) opens
• 5) is composed
• 6) propose
• 7) accept
• 8) need
• 9) to offer
• 10) hear

Пояснения:

Предложения с пропусками:

We would like you 1) to be the keynote speaker at our annual international management conference.

• Would like smn to do smth подразумевает постановку глагола в форму инфинитива с частицей to.

We 2) ask you to make a twenty-minute presentation on the trends in International Management in the Twenty-first Century.

• Are asking не подходит, так как Present Continuous в таких случаях используется в контексте нетерпимости (если предложение уже было озвучено, а ответ не получен, и это повторное обращение) => ставим просто ask.

This 3) is the subject of the plenary session which 4) opens the three-day event.

• В третьем устойчивый оборот this is, в четвертом Present Simple, т.к. речь идет о зафиксированном (запланированном) событии в ближайшем будущем.

The audience 5) is composed largely of senior managers and management consultants.

• Present Simple Passive (аудитория состоит из) — конструкция am/is/are + V3 (Past Participle).

We can 6) propose a fee of $ 1,500 for your lecture plus expenses.

• После модального глагола can глагол употребляется в форме инфинитива без частицы to (bare infinitive).

If you would 7) accept our invitation, please, let us know what equipment you 8) need for your talk.

• После would глагол употребляется в форме инфинитива без частицы to (bare infinitive); need не употребляется в Present Continuous.

We are also pleased 9) to offer your McNair Consulting Group a discounted rate for a stand in the conference exhibition.

• To be pleased to do smth подразумевает постановку глагола в форму инфинитива с частицей to (to V).

We are looking forward to 10) hear from you soon.

• To be looking forward to do smth подразумевает постановку глагола в форму инфинитива с частицей to (to V).

Текст:

Dear Mr. McNair,

We would like you 1) to be the keynote speaker at our annual international management conference. We 2) ask you to make a twenty-minute presentation on the trends in International Management in the Twenty-first Century. This 3) is the subject of the plenary session which 4) opens the three-day event. The audience 5) is composed largely of senior managers and management consultants. We can 6) propose a fee of $ 1,500 for your lecture plus expenses.

If you would 7) accept our invitation, please, let us know what equipment you 8) need for your talk. We are also pleased 9) to offer your McNair Consulting Group a discounted rate for a stand in the conference exhibition.

We are looking forward to 10) hear from you soon.

Yours sincerely,

William Pasewark

Secretary General, Association of International Executives