As we know, ________ people in the world are sending information by e-mail every day．

many million

many millions

several millions

several million

They have ________ us ＄20 000 for the house．Shall we take it?

shown

supplied

provided

offered

He found it increasingly difficult to read, ________ his eyesight was beginning to fail．

and

for

but

or

________ you’ve tried it, you can’t imagine how pleasant it is．

Unless

Because

Although

When

________ he has limited technical knowledge, the old worker has a lot of experience．

Since

Unless

As

Although

We thought there were 35 students in the dining hall, ________, in fact, there were 40．

while

whether

what

which

Someone called me up in the middle of the night, but they hung up ________ I could answer the phone．

as

once

before

until

The WTO can’t live up to its name ________ it doesn’t include a country that is home to one fifth of mankind．

as long as

while

if

even though

We have physics on Tuesday, Thursday and Saturday; that is to say, we have it ________．

every other days

every three days

every other day

each two days

If you don’t like to swim, you ________ stay at home．

should as well

may as well

can as well

would as well