—Should I lock the lab before I go home?—_ _.I'll check it myself later.
We haven’t heard from her for long, so we give her_____for dead.
Does the amount of rain_____the growth of crops?
In our school it is a rule that the students are banned______computer games.
A great many students have dropped out of school and now the number of our class has____51.
The person____drugs had much difficulty in getting rid of the_____.