There are few problems left I believe you can deal with them yourself．

Great changes _______over the years．

Mrs. Smith, please teach me how to draw on the computer today. — Oh, no._______. You have to get familiar with the keyboard first.

According to ____recent report, house prices in this city will reach 10000 yuan a square meter by ____year 2016.

I’m sorry we ________ all the educational CD-ROM. Can you come next week?– Please call me as soon as the latest one _________.