I heard your father had gone to Beijing on business．
Yes，And he_____in three weeks．（ ）
A．will returnB．has returned
C．returnedD．returns
Do you like English？
Yes， but I think____ is a great challenge to learn the language well．（ ）
A．thatB．thisC．it
Can I help you， Madam？
Yes． I'd like some______．（ ）
A．pearsB．bananaC．milks
Mom， could I go out with my friends？
______，but you have to come back before 10：00．（ ）
A．Sorry， you can'tB．Yes， you can
C．No way
Do you like the song Shao Nian？
Yes． I like the songs ______ I can sing along with．（ ）
A．thatB．whoC．what
A lot of old people are lonely． What can we do to help them？
I want ______ the old people's home to talk to them．（ ）
A．visitB．to visitC．visiting