－Must I go to the gym three times a week?

－No, you ________．Twice a week is OK．

mustn't

needn't

can't

shouldn't

－Mary's skirt is a real bargain．

－________ must be in a secondhand shop that she bought it．

That

This

It

There

I wasn't aware of this before, but recent research ________ that eating too much fat can contribute to heart disease．

has shown

will show

was showing

showed

The volunteers will do ________ to help those injured in the earthquake．

everything possible humanly

everything humanly possible

humanly possible everything

humanly everything possible

The petrol in the car ________ on our way to the beach, so we had to walk there．

gave up

gave off

gave in

gave out

It gives his life a flying start ________ he has gone abroad for further education．

what

when

that

how

Children are taught to respect everyone, ________ race, sex or age．

in terms of

in the face of

regardless of

in place of

What is the best way you can imagine ________the overuse of water in our school?

reducing

to reduce

reduced

reduce

We should do what we have to do ________ we can do what we want to do in the future．

so that

in case

for fear that

now that

Please don't phone him between 1 and 3 p．m．tomorrow．He ________ a lecture then．

has delivered

has been delivering

will be delivering

delivers