() 4. the sun was not yet up,many people were already taking exercise in the square.

   A. As   B. If

   C. Though   D. Because

() 3. Rick has learned a lot about Chinese culture he came to China.(2014安徽)

   A. before   B. when

   C. until   D. since

() 2. Mum says I do my homework now,I can watch TV for an hour to-night.

   A. if   B. though

   C. because   D. while

() l. he was very tired,he continued working in his office.

   A. Since   B. Although

   C. As soon as   D. Because

() 15. She says that she’ll have to close the shop business improves.(2015兰州)

   A. if   B. or

   C. unless   D. because

() 14. Have you ever heard of the news is about the Strawberry Concert?(2015南宁)

   A. who   B. what

   C. which   D. when

() 13. —How is Nancy getting on with her les sons?

—She won’t catch up with others she studies harder.

(2015海南)

   A. after   B. unless

   C. as soon as

() 12. —Excuse me,may I come in?

—Not yet. Please wait on your chair your name is called.(2015呼和浩特)

   A. and   B. until

   C. or   D. since

() 11. Mr Smith has a habit of taking a show er he has breakfast.(2015浙江温州)

   A. though   B. before

   C. because   D. since

() 10. —It's said that the new highway has been completed.

—Yes,but we don't know it's to be opened to traffic soon.(2015内蒙古包头)

   A. which   B. when

   C. whether   D. since