1 The ___________ (discover) of a cure for Ebola (埃博拉病毒) was one ofthe big scientific aims of 2014.2 Animals spend much of their life fighting for ___________ (survive).3 The ___________ (migrate) of giant red crabs is one of the most amazingsights.4 Nick is always getting lost because of his terrible sense of ___________(direct).5 Our city is one of the most popular tourist ___________ (destination).
提高业绩的主要途径( )(易)
A. 增加成交顾客的人数
B. 提高客单价
C. 降低成本
D. 提高售价
You ____________ finish it in such a short time.
A. don’t have to
B. mustn’t
C. shouldn’t
D. needn’t to