We have to admit that the biggest___________ facing the ecosystem is limited resources and the worsening environment.
| A．mission | B．challenge | C．scale | D．contribution |
.
I don’t want _____ like I’m speaking ill of anybody, but the manager’s plan is unfair.
| A．to sound | B．to be sounded like | C．sounding | D．to have sounded |
.
. Jenny, your paintings are wonderful. I _____ you learned to paint.
| A．hadn’t known | B．didn’t know | C．won’t know | D．haven’t known |
.
The jewelry shop is reported in the local newspaper ___ last night.
| A．to have robbed | B．having been robbed |
| C．to be robbed | D．to have been robbed |
.
She is now training hard for the next Olympics in London, desiring that she __ win another gold medal for her nation before she leaves the sports field forever.
| A．will | B．must | C．should | D．would |
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We’d like to go out for a meal on Thursday evening —does that ______ with your plans?
| A．settle in | B．fit in | C．break in | D．take in |