40．I don’t remember how many years ago_________people began to grow pine apples here.
| A．it was when | B．it was that | C．was it when | D．was it that |
—Look at these tracks. It __________ be a wolf.
—It needn't be. It be a fox.
| A．must ; could | B．may ; might |
| C．need ; must | D．could ; need |
Travelers_______________ that they should bring their ID cards with them.
| A．have reminded | B．are reminded |
| C．were reminding | D．had been reminded |
O'Neal works hard. He is often seen _______ heavily before his teammates have even arrived at practice.
| A．sweated | B．to be sweated |
| C．sweating | D．being sweated |
—Our holiday cost a lot of money.
—Did it? Well ,that doesn't matter____________ you enjoyed yourselves.
| A．unless | B．in case | C．as far as | D．as long as |
"Who Moved My Cheese?", ____________ is a best-selling book, is written by Spencer Johnson.
| A．which | B．that | C．it | D．what |