The visitor asked to have his picture taken ____ stood the famous tower.
| A．wherever | B．at which | C．the place where | D．where |
How to create enough jobs for the laid-off workers is a(n)________problem for which there is no simple solution.
| A．delicate |
| B．internal |
| C．emergency |
| D．complex |
—Are you all right?
—________.
| A．I think so |
| B．That’s OK |
| C．Take it easy |
| D．It’s very kind of you |
My goodness. How lucky we are! If there had been places for us on that aero-plane, we ________dead now.
| A．will be |
| B．would be |
| C．would have been |
| D．had been |
Onflight would be delayed, we made other arrangements.
| A．being informed |
| B．informed |
| C．informing |
| D．having informed |
Because of climate change, the ice that polar bears depend on for survival.
| A．are slowly disappearing |
| B．is slowly disappearing |
| C．are slowly disappeared |
| D．have slowly disappeared |