Children are ____ to meet with setbacks as they grow up, so their parents don’t have to worry about it．
| A．possible | B．due | C．necessary | D．bound |
It's much easier to make friendsyou have similar interests.
| A． | unless | B． | when | C． | even though | D． | so that |
Before you pay a visit to a place of interest, look in your local librarya book about it.
| A．on | B．at | C．for | D．to |
From space, the earth looks blue. This is about seventy-one percent of its surface is covered by water.
| A．why | B．how | C．because | D．whether |
--- You needn't take an umbrella. It isn't going to rain.
--- Well, I don't know. Itdo.
| A． | might | B． | need | C． | would | D． | should |
If wea table earlier, we couldn’t be standing here in a queue.
| A．have booked | B．booked | C．book | D．had booked |