In the rainforest of the Amazon, 50 to 150 plant species ________ every day.
| A．are being destroyed |
| B．are destroying |
| C．have been destroyed |
| D．destroyed |
—You seem to be familiar with London.
—I ______ there for three years. It’s great to be back.
| A．lived | B．had lived | C．have lived | D．live |
Children ______ to difficult situations are better at handling those _____ tasks.
| A．exposing; challenging | B．exposed; challenged |
| C．exposed; challenging | D．exposing; challenged |
The plan _____ just because people were unwilling to cooperate.
| A．broke up | B．broke down | C．broke away | D．broke off |
—It is burning hot today, isn’t it?
—Yes. _______ yesterday.
| A．So was it | B．So it was | C．So it is | D．So is it |
______ houses were knocked in the earthquake.
| A．A great many of | B．The number of | C．A great number of | D．Amounts of |