________ these experiments were successfully completed would we think of going into humans.
A. If only B. Only if C. So that D. Even if
Is there a hospital around _________ I can get some medicine for my wounded hand?
A. what B. that C. which D. where
the weather, the sports meet will be held on time.
A. In favor of B. Regardless of C. Apart from D. Due to
Mandy, ___ university student from Canada, teaches us ___ history of western art.
A. an; the B. a; the C. the; / D. the; a
I'm sure you'd rather she went to school by bus， ？
A．hadn't you B．wouldn't you
C．aren't I D．didn't she
Old-fashioned phones matter when wireless networks _____ in disasters.
A. turn down B. break down C. turn out D. break out
