Every 40 minutes we will take a 20-minute break, ______ your guide will give a short talk on different aspect of the Great Wall.
| A．during that | B．and when |
| C．which | D．during which time |
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 |
In crowded places like_____airports and railway stations,you _______ take care of your luggage.
| A．can | B．may | C．must | D．will |