With the development of science and technology, people’s life _______ in the past few years.
—When shall we restart our business ? —Not until we our plan .
When changing lanes , a driver should use his turning signal to let other drivers know .
you may have , you should gather your courage to face the challenge .
We last night , but we went to the concert instead .
I’m sure that your letter will get attention . They know you’re waiting for the reply .