—When ________ the telephone ________?—In 1876.A. is; inventedB. did; inventedC. was; invented
The river is too wide for the swimmers _______________.
I don’t know ______ with this problem. It’s too hard.
The notebook ___________ be John's .There is his name on it.
_____you go, ____you do in your school, You must obey the rules.
Tony didn't run ________.He was behind all the other runners.