当经介绍后认识某人时,你应该说:
—What colour is it ? —It’s __________ . A. a bookB. greenC. beautiful
What are ___ ? They are jeans. A. this B. these C. that
___ time is it now ? A. What B. Who C. which
_________teachers are there in your school? Fifty. A. How manyB. How much C. How old
________ is the library? It’s on the second floor. A. What B. WhereC. How