—How did he get my telephone number?
—You ________ it . You told him last week．
| A．should have forgotten | B．may have forgotten |
| C．must have forgotten | D．could have forgotten |
Henry hurried to the library, only to find a notice at the gate, saying “No___________before 12:00 noon”.
| A．permission | B．commitment | C．possession | D．admission |
___________there are many different types of food, some animals spend their lives eating only one type.
| A．Since | B．Unless | C．Once | D．While |
—The light___________on for long.
—Oh, I am sorry , I will go and turn it off.
| A．has been left | B．has left | C．had been left | D．had left |
In___________week or so, I will be among unemployed, I am afraid.
| A．a ;不填 | B．a ; the | C．the ; 不填 | D．the ; the |
—Do you intend to sign up for the Yoga club?
----___________. I just can not wait to start .
| A．That depends | B．No wonder | C．That is for sure | D．Go ahead |