Charlie Chaplin found __________ difficult to entertain the audience at first.
| A．it | B．that | C．one | D．this |
We can’t help you ____ you tell us what’s wrong.
| A．Since | B．Unless | C．If | D．When |
I’m not a little hungry now, but I____ enough at lunch.
| A．eat | B．had | C．have had | D．have |
—Do you like pets?
| A．have | B．catch | C．keep | D．taste |
We will appreciate____ if your parents can help us.
| A．/ | B．that | C．it | D．this |
—Shall we go to see him right now?
—I’m afraid not. This weekend may be a ____time
| A．good | B．better | C．best | D．well |