问题
There is some doubt among people _________ $749 is too much for an iPhone 5.
A:that
B:whether
C:what
D:if
B:whether
C:what
D:if
正确答案是：
同类题型
How shall we go to that farm?-Well,I recommend a bus. [ ]
In the dark forests , some large enough to hold several English towns.
Do you know the West Lake in Hangzhou? – Yes, this is the third time that I ____ this beautiful city
His work _________ have been completed; otherwise, he wouldn’t be enjoying himself on the beach.