单选题The only safe way of distinguishing between edible and poisonous
mushrooms is to learn to ______the individual species.
A.identify
B.classify
C.isolate
D.separate
单选题 You should know better than ______ your little sister at home by herself.
单选题It is not an agreement ______, but it will serve as one.
单选题He is a (true) friend (of mine), whom I can always (depend) whenever I (get into) trouble.
单选题His fellow workers saw him fall down and blood came out from the open _____.
单选题Our manager is ______ an important customer now and he will be back this afternoon.
单选题The monitor ______ ill, we'd better put the meeting off.
单选题They fulfilled the task in ______ it took us. A. three-fourths time B. three-fourths times C. three-fourths the time D. the three-fourths time
单选题Now, she is upstairs ______ a long speech for the president.
单选题
单选题Little ______ that the police are about to arrest him.
单选题
单选题We ______ to the English broadcast when Hsia Li came in.
单选题Dublin will no longer ______its constitutional claim to Northern Ireland, as it had promised to do on Sunday.
单选题She got a ______ job while she was waiting to go to the university.
单选题I didn't stop at John's house because he had visitors, and I didn't want to {{U}}butt in{{/U}}.
单选题--Which one can I take?--You can take ______ of them. I'll keep none.
单选题The author's presentation of Atlantans' car-dependence is meant
单选题Now many manufacturers build their business reputations by enclosing ______ in the new products in case of damage in shipment or by incorrect operation.
单选题It is often said that ______ teachers have ______ very easy life.
A. /, /
B. /, a
C. the, /
D. the, a