—________ will your brother come back?
—I’m not sure. Maybe in a week.
A. When B. How C. Whether
—Who taught Zhu Zhiwen to sing?
—________! He learned singing by himself.
A. Everybody B. Somebody C. Nobody
Helen is going to work in an old people’s home to help ________ the old people.
A. look forward to
B. look after
C. look through
—________. Is this your book?
—Yes, it is. Thank you!
A. Sorry B. Hello C. Excuse me
________ the No. 48 bus driver, all the passengers were saved. The driver managed to stop the bus before he died.
A. Thanks to B. According to C. As for
Mum, the soup is not ________enough. A little more sugar, please.
A. sour B. salty C. sweet