---What are you busy with ?
--- We are carrying out a research ____ the causes of cancer.
|
A.into |
B.onto |
C.to |
D.in |
---____ the paper ?
--- No, I have still got one page to finish.
|
A.Have you done |
B.Do you do |
C.Did you do |
D.Had you done |
– Will it rain tomorrow?
-- No. I don’t doubt ________.
|
A.whether it will rain |
B.that it will rain |
C.whether it rains |
D.that it rains |