—What have you learned from your experience in England?
—Well, meeting people from another culture ______ be very difficult.
| A．can | B．must |
| C．shall | D．should |
________ they heard the shout for help，they rushed out.
| A．Immediately | B．The moment | C．The minute | D．All the above |
You should make it a rule to leave things ________you can find them again.
| A．when | B．where | C．then | D．there |
This is the best book _____ I have been looking for all this year.
| A．who | B．whom | C．which | D．/ |
Lucy has a great sense of humour and always keeps her colleagues _____ with her stories.
| A．amused | B．amusing | C．to amuse | D．to be amused |
_____ do you think will teach us maths next term？
| A．Whom | B．Who | C．What | D．That |