Tom had to______ the invitation to the party last weekend because he was too busy.
| A．turn in | B．turn down |
| C．turn over | D．turn to |
.---It’s noisy.
--- The office upstairs ______ , which _______ two weeks
| A．will decorate , will last | B．will be decorated , will be lasted |
| C．is being decorated, will last | D．is decorating .is lasting |
.---Hurry up , Michael!
---Goodness me! The class ____ .I’ll be late again.
| A．must begin | B．may begin | C．should have begun | D．must have begun |
.I just wonder _____ that makes him so excited.
| A．why it is | B．what it is | C．why is it | D．what is it |
Thanks to your help, ________ I would not have completed the task on time.
| A．however | B．because | C．so | D．otherwise |
The conflict had developed into a stage ______ the two countries were gathering big troops on the border.
| A．where | B．when | C．which | D．that |