I have no money on me because I often pay ________ things through WeChat(微信).
to
of
by
for
—Have you mended your shoes, Bob? —Yes, I _________ them twenty minutes ago .
—Listen! Is Mary singing in the next room? —No. It _______ be Mary.She has gone to Shanghai for an important meeting.
.Hurry up, ________ you’ll not catch the first bus.
The old men in hospital ______________.
Beihai Park is a beautiful place that many people come to visit it every day.