Scientists say it may be five or ten years___________ it is possible to test this medicine on human patients.
| A．since | B．before | C．after | D．when |
------Have you heard the latest news
-------No, what ________?
A is it B is thereC are they D are those
-----Were all the toys for the children carried to their new kindergarten?
------No, _______only some of them.
A it was B that were C it were D there was
Production rose _____ 10% in April, ____ the same month of last year.
A in, compared to B by, compared with
C in, compared with D by, comparing to
Our neighbor has _________ ours.
A as big a house as ours B. as a big house as
C. the same big house as D. house the same big as
The visitors did nothing but ______ tea and ______ to each other.
| A．drinking; talking | B．drink; talk |
| C．to drink; to talk | D．drank; talked |