The young lady stopped and looked around as if_____ whether she was being followed.
A seeing B to have seen C having seen D to see
The folk song concert was so well _______ that all the tickets had been sold out on the first day.
| A．accepted | B．recognized | C．received | D．promised |
—I’ll join the music club ________ Mary is in the club, too.
—You mean if Mary joins the club you’ll do, too.
| A．in case | B．so that | C．now that | D．on condition that |
Bears often hide themselves in places ________ can’t be found by hunters.
| A．in which | B．where | C．that | D．不填 |
When I turned to the person ________ next to me, I recognized that he was my schoolmate.
| A．seating | B．being sat | C．sit | D．seated |
Of all the books on the desk, ________ is of any use for our safety.
| A．nothing | B．no one | C．neither | D．none |