问题
It’s uncertain ________ theexperiment is worth doing.
A:if
B:that
C:whether
D:how
B:that
C:whether
D:how
正确答案是：
同类题型
His shop was so well managed that he sold in just 5 months ________ his competitor sold in a year
“It looks as if he were drunk” “So itdoes _____”
1 am looking forward to your answer as soon as possible.
Everyone was out of _____ breath after they ran for solong _____ time
This is one of the most interesting film ___ we’ve ever seen.