This is the biggest lab_____ we have ever built in our university.

The teacher asked the two students todiscuss the question in a low voice______ they should bother the others

He is from an ________ country.

The weather has been very hot and dry. —Yes. If it had rained even a drop, things would be much better now! And my vegetables.

I need help _____my English,but I can help you______your Chinese.