(It was) (in the) primary school (where) my teacher introduced (me to) computers.

You should (check) the air in the (tires) (as) you (sta...

单项选择题You should (check) the air in the (tires) (as) you (start on) a long automobile trip.

(Hard) (as) he worked, (but) Mr. Black couldn't keep th...

单项选择题(Hard) (as) he worked, (but) Mr. Black couldn't keep the shop (properly).

Since her blood pressure is (much) higher (than) (it sh...

单项选择题Since her blood pressure is (much) higher (than) (it should be), her doctor insists that she (will) not smoke.