— What are you doing outside the class? Didn’t you hear the clock ______?—Sorry, sir. I ______.
By August the flowers _____.
The boy _____ out to play until he had finished his homework.
Water _____ at 100 degrees centigrade.
–English has large vocabulary, hasn’t it? –Yes, _____ more words and expressions and you will find it easier to read and communicate.
The first use of atomic weapons was in 1945. and their power _____ increased enormously ever since.