_____ of our classmates are good at basketball.
_____ of the teachers are women in our school. A. Second thirds B. Two threes C. Two thirds
--They have been to Australia. --_____. A. So do I B. So have I C. So did I
--Have you done your homework ? --Yes, I _____ it ten minutes ago. A. finish B. have finished C. finished
Nothing _________ difficult if you work hard. A. am B. is C. are
--How many people will come to Beijing this year? --It’s hard to say ._________ people, I think. A. Three millions B. Three millions of C. Millions of