Mr．Thomas is a manager in a company now but he once ________ in the army for three years．

served

has served

is serving

had served

Martin has a kind nature, ________ he is getting on very well with his colleagues．

in case

so that

even if

or else

I have no idea at all ________ he wrote the letter－it isn't dated．

what

that

why

when

The Internet ________ you can have a lot of fun can also be a dangerous thing sometimes．

which

that

where

when

You can't imagine what difficulty I had ________ my oral English when I was a freshman．

to improve

improved

improving

improve

It is important that food is made ________ to the disaster areas．

precious

available

convenient

suitable

All the candidates are excellent, but I like the last one ________ －his experience is just what

we need at the moment．

in brief

in total

in advance

in particular

Although this vase is similar in size and design ________ that one, they differ ________ quality．

in; in

to; in

to; from

in; from

Don't take ________ for granted that others around will help you when you are in trouble．

it

that

one

those

They are now in great need of help so your support will certainly make a(n)________．

attempt

difference

effort

remark