______ the boss pays us a visit, everyone is very nervous and on their best behaviour.
A. Wherever
B. Whenever
C. Whatever
D. Whoever
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We were ______ after all the hard work.
A. wear out
B. weary out
C. worn out
D. outworn
善意相对人要示法定代理人追认限制民事行为能力人订立合同效力的期限为( )。
A. 半个月
B. 1个月
C. 2个月
D. 3个月
Five hundred dollars ______ expensive. Have you nothing cheaper
A. are
B. to be
C. is
D. has been
Do we have ______ money to last us the week
A. a lot of
B. plentiful
C. plenty of
D. enough
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