I just can’t figure out the meaning of the word---so I’ll have to ___ the dictionary.
| A．look up | B．go over | C．check in | D．refer to |
they are twins, they don’t look the same at all.
| A．Because | B．Though | C．As | D．Since |
Tom helped us settle down in this new city, is very kind of him.
| A．that | B．it | C．which | D．where |
—I am going to America.
—how long you there?
| A．are; stayed | B．are; staying | C．have; stayed | D．did; stay |
The geography teacher told his student that the earth ________around the sun .
| A．traveled | B．travels | C．would travel | D．travelling |
_________useful advice it is ?
| A．What a | B．How a | C．What | D．How |