I sympathize, I can’t really do very much to help them out of the difficulties.(2001)
As long as
B. As
C. While
D. Even
查看答案
he always tries his best to complete it on time. (1999)
A. However the task is hard
B. However hard the task is
C. Though hard the task is
D. Though hard is the task
This is an illness that can result in total blindness left untreated. (2000)
A. after
B. if
C. since
D. unless
to sleep than the telephone rang once more.
A. Hardly he had gone
B. No sooner had he gone
C. Not until he went
D. Scarcely did he go
She did her work her manager had instructed. (2002)
A. as
B. until
C. when
D. though
微信支付 
支付宝支付