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 will be away for at least one year and I’d appreciate ______ from you now and then.
| A．having heard | B．hearing | C．heard | D．hear |
—Jack, your father has gone out without this umbrella!
—Well, take it easy. _________ he comes back for it.
| A．It is long before that | B．It won’t be long since |
| C．It will be long before | D．It won’t be long before |
Hearing the boring news, I was too distracted （心烦意乱）tomy attention on my homework.
| A．attract | B．draw | C．concentrate | D．pay |
Tom was ______ that he couldn’t understand ______ difficult sentence.
| A．so a stupid boy; such | B．a so stupid boy; a such |
C．so stupid a boy; a such |
D．so stupid a boy; such a |
—Do you know Ann Watterson very well?
—Yes, she used to be ______ coach and in ______ charge of our school team.
| A．a; the | B．the; the | C．a; 不填 | D．不填; 不填 |