The customers are pleased with the______of the restaurant.
A．balanceB．experience C．surfaceD．service
I try to make myself ____,so I speak aloud.
A.hear B.to hear C. heard D.hearing
.The boy __in the teacher’s office was found _ yesterday .
A. standing, smoke B. standing, smoking
C. stood, smoke D. stood, smoking
Only when the work is done ________ be able to go back home.
A．you haveB．you will
C．will youD．have you
All the donated money should be made full use ___the homeless people Ya'an city of Sichuan province.
A．of helping B．to help
C．of to helpD．to helping
．Who is knocking at the door?
——It ______ Mr. Black, because he_______Washington.
A．can't be;has gone to B．may be;has been to
C．must’t be;has gone toD．may be;went
