I''m surprised that he ____ to help me when I needed his help .
| A．should refuse | B．would have refused |
| C．should have refused | D．may have refused |
The study of natural history is not something to be left to biologists. In fact, their capacity _____ the time they can spend away from their offices is very limited.
| A．in search of | B．in face of | C．in favour of | D．in terms of |
Nobody but doctors and those _______ by Dr Smith ______ to enter the patient’s room.
| A．invited; is allowed | B．invited; are allowed |
| C．being invited; is allowed | D．being invited; are allowed |
It is amazing that the little boy can swim ________the river ________100 meters in width.
| A．across; measuring | B．over; measured |
| C．across; measure | D．through; measuring |
According to the recent research, heavy coffee drinking and heart attack is not necessarily ______ and effect.
| A．reason | B．influence | C．fact | D．cause |
What ________surprise you gave us by wearing such funny________ at so serious a meeting!
| A．/;clothes | B．a; cloth | C．a; dress | D．a; clothes |