The fact has worried teachers and parents ________ more and more students have got near-sighted.
| A．what | B．which |
| C．that | D．though |
. The girl ___________ under that tree is my sister.
| A．sitting | B．sits | C．is sitting | D．sat |
. This sentence needs ___________ .
| A．a improvement | B．improve | C．improving | D．improved |
. ___________ anything about the accident, he went to work as usual..
| A．Not known | B．Known not | C．Knowing not | D．Not knowing |
. The next morning she found the man ___________ in bed, dead.
| A．lying | B．lie | C．lay | D．laying |
. There was terrible noise ___________ the sudden burst of light.
| A．followed | B．following | C．to be followed | D．being followed |