David usually takes _______ walk for an hour after dinner.
---- Can you tell me why __________? ---- Because I want to help the people there. A. do you go to Tibet B. did you go to Tibet C. you are going to Tibet
--- Were you at school when he came to see you ? ---- Yes, I __________ a math class . A. had B. was having C. am having
All the teachers and students look friendly . Tom finds it easy to __________ with them in the new school. A. get along B. go on C. get to
I often __________ my homework after supper. But yesterday evening, I _________ TV. A. do; watch B. did; watched C. do; watched
She __________ know the answer, but I'm not sure. A. can B. may C. must