If you have a toothache, you can see him. He is a __________.
A. teacher B. dentist C. policeman
It______last week that the haze(雾霾)in BeiJing caused many problems.
A. was reported
B. is reported
C. reported
---How long have you the dictionary?
---For two years.
A. buyB. boughtC. had
----Who helped you with your English?
----______.I learned it all by myself.
A. Nobody
B.Everybody
C. Somebody
Look! There is a pet dog on the playground. Let’s go and play with it.
A. liesB. lieC. lying
Trees can also prevent the sand from toward the rich land.
A. movingB. to moveC. move