“Look at these tracks. It _______ be a wolf.” “Don’t be so sure. I think it _______ be a fox.”
| A．must; could | B．may; might |
| C．need; must | D．could; need |
It was in the street_________ I met Mary yesterday .
| A．that | B．when | C．where | D．what |
Generally speaking, when ____ according to the directions, the drug has no side effect.
taking B. taken C. to take D. to be taken
As we all know, many Chinese words have come into English, ______ typhoon, tofu and kung fu.
| A．for example | B．that is |
| C．such as | D．so as to |
_____ of the students who took part in the military training is 450.
| A．A number | B．A lot | C．Lots | D．The number |
Please tell me the way you thought of _______ the garden.
| A．take care of | B．to take care of |
| C．taking care of | D．to take care |