We were greatly ________ in our investigation by the cooperation of the police．

exposed

submitted

aided

switched

There is no doubt _______ you will be warmly welcomed by the villagers because it was you ________ helped them out of trouble．

that; that

whether; that

that; which

whether; which

Not until I began to work ________ how much time I had wasted

didn’t I realize

I didn’t realize

did I realize

I realized

It is suggested that a doctor _______ immediately．

be sent for

sent for

is sent for

should send for

_________ by the beauty of nature, the girl from London decided to spend another two days on the farm．

Attracting

Attracted

To be attracted

Having attracted

He had studied Japanese for two years before he ________ English．

took over

took up

took on

took off

The farmers in that area are in a terrible ________ because of the water shortage．

direction

point

disaster

attitude

A great ________ of foreign guests come to our school for a visit every year．

deal

number

many

amount

Hearing the sad news, he ________ his head in his hands and began to cry．

placed

hid

laid

buried

They talked about the persons and things ________ they remembered at school．

which

who

that

whom