ПОМОГИТЕ!!!
Какой вариант в пропущенное место??? Помогите пожалуйста)))
What..... in her album now ?
a) does she draw
b)does she drawing
c) she drawing
d) is she drawing

My colleagues always........ to our boss with great interest.
a) are listening
b) listen
c) dont listen
d) listens

Look! He........ the bike.
a)mends
b)does mend
c)is mend
d) is mending

The students....... the rule now.
a) understands
b)understanding
c)understand
d)are understanding