----It’s time to go to bed,Jack.----OK._________, Mom.
When we got to the hospital, Mary _______ there. A. left B. has left C. had left
Students are supposed _______ school uniforms on school days. A. wear B. to wear C. wearing
—When ________ the telephone ________?—In 1876.A. is; inventedB. did; inventedC. was; invented
This dictionary______ Ellen’s. Look, her name is on it. A. must be B. can’t be C. might be
The hall is ______ to hold one hundred people. A. enough big B. big enough C. as big