—Shall I go over to chat with you this evening?
—Nice of you! It is ____ great comfort to keep me ____ company, when I’m alone at home.
| A．a; the | B．a; 不填 | C．不填; a | D．不填; 不填 |
number of visitors came but I don’t knownumber．
| A．A ; the | B．The ; a | C．A ; a | D．The ; the |
He came to my class every week, but his look that he was not really interested．
| A．expresses | B．described | C．explained | D．suggested |
Bears often hide themselves in placescan’t be found by hunters．
| A．in which | B．where | C．that | D．不填 |
Of all the books on the desk,is of any use for our safety．
| A．nothing | B．none | C．neither | D．no one |
He commanded that all the gates ．
| A．should shut | B．would be shut | C．shut | D．be shut |