Hi, Bill. I _____ you _____ in this city. How long have been here?
| A．didn’t know; were | B．don’t kow; are |
| C．haven’t known; are | D．don’t know; were |
Mr. Smith, _____ of the ______ speech, started to read a novel.
| A．tired ; boring | B．tiring ; bored | C．tired ; bored | D．tiring ; boring |
---The light in the office is still on.
--- Oh, I forgot _______.
| A．turning it off | B．turn it off | C．to turn it off | D．having turning it off |
. Rather than _______ on a crowded bus, I always prefer _____ an electric bicycle.
| A．ride ; ride | B．riding ; ride | C．ride ; to ride | D．to ride ; riding |
Tony, my best friend, has done _______ he can to help me out of trouble.
| A．all that | B．all what | C．which | D．all which |
She ________ when she received her medical report.
| A．could help but to cry | B．couldn’t help but crying |
| C．couldn’t help crying | D．couldn’t help to cry |