Being a parent is not always easy, and being the parent of a child with special needs often carries with ______ extra stress.
| A．it | B．them | C．one | D．him |
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 |
The reason he is late isthere was a breakdown on the railway．
| A．why; that | B．because; that | C．that; because | D．why; why |