If the weather had been better, we could have had a picnic. But it ____ all day.
| A．rained | B．rains | C．has rained | D．is raining |
We must keep our room clean. Dirt and disease go _____, you know.
| A．from time to time | B．hand in hand | C．step by step | D．one after another |
I thought you ____ like something to read, so I have brought you some books.
| A．may | B．might | C．could | D．must |
Every four years athletes from all over the world _____the Olympic Games .
| A．join | B．attend | C．take part in | D．sit for |
------Did you get a ticket?
-------No. I______, but there wasn’t any left.
| A．had to | B．attempted to | C．decided to | D．managed to |
They have decided to show the children around the small town because the brightly colored houses there appeal _____ children .
| A．to | B．for | C．against | D．with |