They______ when the teacher came in.
| A．talk | B．are talking | C．to talk | D．were talking |
______ Mary ______ Alice was late for school. Their bikes were broken.
A. Both; and
B. Not only; but also
C. Either; or
The terrible gas makes my chest______.
A. hurts B. hurt C. hurting
______ of the students in my school _______ girls.
A. Two fifths; are
B. Two fifths; is
C. Two fifth; are
I have __________ this iPhone air for only a month.
A. bought B. had C. buy
Noise is harmful ______ our hearing.
A. to B. for C. on