-- Has your elder brother returned from Africa yet?
-- Yes, but he _________ here for only three days before his company sent him to Australia.
| A．was | B．has been | C．will be | D．would be |
He did not regret saying what he did but felt that heit differently.
| A．could express | B．would express |
| C．could have expressed | D．must have expressed |
Nowadays some protective parents want totheir kids from every kind of danger, real or imagined.
| A．spot | B．dismiss | C．shelter | D．distinguish |
to sunlight for too much time will do harm to one’s skin.
| A．Being exposed | B．Exposed |
| C．Having exposed | D．After being exposed |
They appearedme, so I had to explain to them.
| A．misunderstanding | B．misunderstood |
| C．to be misunderstood | D．to have misunderstood |
If China’s space technology has achievedbreakthrough in this field, it really is
amazing wonder.
| A．the; an | B．a; an | C．不填; the | D．a; 不填 |