当你想问别人的妈妈是做什么工作的,你应说:________A.What's your mother? B.Who's your mother?
Whatshe like ? She likes. A. do, singB. does, sing C. does, singing
Wait at alight. A. red B. green C. yellow
Green light means “.” A. go B. wait C. stop
Stopa red light. A. for B. on C. at
Walk straight three minutes. A. at B. for C. in