40. —Shall Tom go and play football? —Not ________ he has finished his homework.
He recommended us ________ English every day.
At the meeting, they discussed different ________ to the study of physics.
Come and see me whenever ________. A. you are convenient B. you will be convenient
To the _______ of the manager, there are so many people who are _______ with the products made in his company.
Education _______ whi metimes can’t help ________ into buying something they don’t really need.