1. The singer and the dancer _____come to Beijing.
A. has B. have
C. are D. is
2. You can stop to _____ your notes while making a speech.
A. refer to B. look for
C. look forward to D. reply to
【解析】动词词组考查题。A. refer to“参考，涉及” B. look for“寻找” C. look forward to“盼望”D. reply to“答复”“在演讲时你可以停下来参看你的笔记。”
3. The question is not ____.
A. worth to consider B. worth to be considered
C. worth considering D. worth being considered
【解析】考查动词。句意：这个问题不值得考虑。固定结构：be worth dong sth.（……值得做），在此结构中动名词的主动结构表被动。故选C.
4. With the help of the foreign experts, they produced ___ washing machines in 2003 as the year before.
A. as twice many B. as twice as many
C. as many as twice D. twice as many
【解析】考察倍数表达法。倍数表达法： 倍数 as adj(原级) as ；本题的many修饰后面的washing machine.故D正确。
5. Although the used car seems in good ______, it cannot run fast.
A. state B. situation
C. condition D. occasion
6. Mum ______ to us, “Be quiet! Your little sister’s sleeping.”
A. whispered B. shouted
C. explained D. replied