问题

_________, I think, and the problems would be settled.

A:If you double your efforts
B:Making more efforts
C:So long as you don’t lose heart
D:A bit more effort

正确答案是：

同类题型

The Voice of China has set up a stage____ some people can realize their dreams.

WherearemykeysI_____lostthem.

下列词语中没有错别字的一项是(　　)

Could you tell us _______ —- About five minutes.

It never occurred to humans until themid-l990s someanimals can be cloned