He was told that it would be at least three more months ___________he could receover and return to work.

The man pulled out a gold watch, _________ were made of small diamonds.

The seaside here draws a lot of tourists every summer. Warm sunshine and soft sands make ________ it is .

．______ the satellite launch drawing near, the research workers put their hearts to the test and always stayed up late.                                         

Time is life; therefore, waste your time and waste your life, ______ master your time and master your life.

________my mathematics is very poor.
Don’t worry . I’ll help you________  I can.

I’m progressing in physics ____ the teacher’s well-organized teaching and exact explanation．

----_______an earthquake happens in Quanzhou when we are having a lesson ?
---- I’m afraid most of us will be trapped.

It will be many years ______ the doctors and medical scientists can find _____ for cancer.

How long do you believe it will be _____ Chinese people land on the moon?