More and more high-rise buildings have to be built in Xinjiekou in Nanjing _____ space[ ]

I really don’t know how anyonecan_____your constant complaint; no wonder you have lost so many friends.

re you doing, Emily—-I’m ______the radio. The music is sobeautiful.

May I go swimming this afternoon — I’m afraid not _______ you have finished your homework.

Wang Ping, as well as other students ________ physics and chemistry.