He seems ____ something valuable. He looks so worried.
| A．has lost | B．to lose | C．to be losing | D．to have lost |
You have failed two tests.You’d better start working harder,_______ you won’t pass the course.
| A．and | B．so | C．but | D．or |
The new group of students is better-behaved than the other group who stayed here _____.
| A．early | B．earlier | C．earliest | D．the earliest |
He is a student at Oxford University,_______ for a degree in computer science.
| A．studied | B．studying |
| C．to have studied | D．to be studying |
—Excuse me sir,where is Room 301?
—Just a minute.I’ll have Bob _______ you to your room.
| A．show | B．shows | C．to show | D．showing |
He has made a lot of films,but _______ good ones.
| A．any | B．some | C．few | D．many |