If you ______ firm action to deal with it at once, you wouldn’t suffer heavy losses tomorrow.
| A．take | B．took | C．has taken | D．had taken |
With a lot of difficult problems____________, the manager felt worried all the time.
| A．to settle | B．settling |
| C．settled | D．being settled |
--Was Tom there when you arrived?
--Yes, but he___________ home soon afterwards.
| A．had gone | B．has gone | C．is | D．went |
—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 |
—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 |