I ______ to Canada twice. It's so beautiful.
A. won't go B. have gone C. doesn't go D. have been

 Your classroom is so dirty. Everyone should keep it ______.
A. dry B. open C. clean D. quiet

 -What else do you want
-______ else. I think I have got everything ready.
A. Something B. Nothing C. Anything D. Everything

 My grandma didn't go to sleep ______ I got back home.
A. where B. until C. as soon as D. while

 The teacher said we needed to choose three ______for the school concert.
A. farmers B. doctors C. drivers D. singers

 The ______ question is much more difficult than this one.
A. sixth B. six C. sixteen D. sixty

 The price of this computer is the ______of the three.
A. smallest B. biggest C. highest D. tallest

 -What's the time now
-It's ______.
A. ten o'clock B. Thursday C. June 15 D. morning

 - Is this your son's sweater
- No. ______ is on the chair behind the desk.
A. He B. Him C. She D. His

 There ______some old people taking a walk in the park.
A. is B. are C. has D. have