Suddenly the small boy stopped and bent down as if to _____ something.
| A．set off | B．pick out | C．pick up | D．set up |
It’s much easier to make friends____ you 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 library _a 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 |
I got to the office earlier that day,the 7:30 train from Paddington
| A．caught | B．to have caught | C．to catch | D．having caught |
When I arrived, Bryan took me to see the house___ I would be staying.
| A．what | B．when | C．where | D．which |