Nature is at its most beautiful in spring ______ all kinds of flowers are in blossom, ______ attracts people from all walks of life to take a spring outing.
| A．that; which | B．which; where | C．when; that | D．when; which |
---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 |
“ If you get the highest mark in your class, I’ll give you ______ you want,” said the mother.
| A．however | B．whatever | C．wherever | D．whenever |