The student ___ themselves in the meadow by the lake.
| A．sat | B．are sitting | C．were seated | D．seated |
.
Cars play an important role in modern life , but they ____ also cause many problems like air pollution.
| A．should | B．can | C．must | D．will |
.
Work on Rome’s Palatine Hill has turned up a series of discoveries, including____ might be the underground cave .
| A．what | B．which | C．that | D．while |
.
. —— What’s up ,Mary?
——I’m worried about the interview I had yesterday.
——____,and let’s keep our fingers crossed and hope for the best.
| A．Come on | B．No wonder | C．Get ready | D．No problem |
.
—— You finally made it , didn’t you ?
——Yes , ____your help , I would have not succeeded.
| A．but for | B．except for | C．but that | D．thanks to |
.
Along with the increasing number of the Chinese students in Australia, ____David Irvine , they____the role of a bridge for the link-up and exchange between the two countries.
| A．expressed; had played | B．expressing ; have been playing |
| C．expressed; are playing | D．expressed ; are being played |