What the forest of the USA in the last 350 years?
| A．has happened to | B．is happened to |
| C．has happened at | D．is happening |
We __________for a picnic if it ___________this Sunday.
| A．won’t go , will rain | B．won’t go , rains |
| C．didn’t go , is raining | D．don’t go , don’t rain |
The house ________ in1950.
| A．build | B．building | C．built | D．was built |
The book _______ my husband bought in Shenzhen yesterday was very interesting.
| A．who | B．where | C．when | D．which |
Four thousand kilometers _________ not a short distance.
| A．is | B．are | C．was | D．were |
_______ you ________ Huangshi since 10 years ago?
| A．Have ; gone to | B．Have ; been to | C．Have ; been in | D．Do, live in |