— Jim, what did I say just now?
— Sorry, I ______ of something else.
| A．thought | B．was thinking |
| C．think | D．will think |
People have learned a lot from
studies．
| A．science | B．scientific |
| C．scientist | D．sightseeing |
The computer was invented in the 20th
| A．sentence | B．center |
| C．concert | D．century |
The boy often got into
with the police.
| A．through | B．terrible |
| C．trouble | D．Trousers |
Please remember to
the cat before you leave.
| A．feed | B．foot |
| C．food | D．find |
John' s mother is a
| A．stop | B．shop |
| C．soup | D．soap |