_______ that the scientist will give us a talk next month?
B
it在句中作形式主语，that引导的从句是真正的主语。本句运用的是疑问句式。
Fifty cases of Green Tea you sent us were found to be badly damaged. This was apparently attributable to ____ packing.( )
Please see to it that the goods we ordered are shipped as soon as the covering letter of credit ____ you.( )
Then we shall go to the _____ _______ Duke Street, where we shall _______ Mohun;
The introduction of containers in transport greatly ______ carriage of goods.
Why couldn ’t you ________ an answer when I asked you why you were late?