I can hardly imagine the difficulty she had ______ enough evidence to prove that she was innocent.
| A．collected | B．to collect | C．to have collected | D．collecting |
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 |
In crowded places like_____airports and railway stations,you _______ take care of your luggage.
| A．can | B．may | C．must | D．will |
—Where’s that report?
—I brought it to you _______ you were in Mr.Black’s office yesterday.
| A．if | B．when | C．because | D．before |