The time and effort he has devoted during the past few years _____ trees in that village are now considered to be very important.
| A．to planting | B．to plant | C．plant | D．planting |
He hurried to the station,＿＿＿the 9：30 train had already left.
| A．to find | B．found | C．only to find | D．only finding |
—Shall we go to the movie tonight?
—No, I’d rather at home with our baby. You’d better not leave it to the babysitter at night.
| A．you stayed | B．you stay | C．stayed | D．stay |
—— I can’t get through to the general manager’s office anyhow.
—— The line is busy. Someone＿＿＿＿＿the telephone.
| A．must use | B．uses | C．must have been using | D．must be using |
The general ordered that the thief＿＿＿＿.
| A．be punished | B．would punish | C．would be punished | D．should punish |
She advised us _____ carefully in her class.
| A．listen | B．listening | C．to listen | D．listened |