Greenland is _______ huge island that is mostly covered with_______ thick ice sheet.
| A．the; / | B．a; the | C．a; a | D．the; a |
Such films _____ shown yesterday ______ not worth seeing again.
| A．that was; is | B．as were; are | C．as were; is | D．those were; are |
Sir, a Mr. Wang is waiting for you at the gate. ________ he come in or stay there?
| A．Will | B．May | C．Shall | D．Must |
When ________ to danger and conflict, men tend to increase blood pressure, ________ nervous and anxious.
| A．exposed; felt | B．exposed; feeling | C．exposing; feeling | D．exposing; felt |
It’s too bad that I failed in the math exam. If only I ______ hard at it!
| A．worked | B．had worked | C．has worked | D．would work |
The last decade of the 21st century ________ the rapid, steady development of China in various fields.
| A．witnessed | B．was witnessed | C．is witnessed | D．had witnessed |