If we'd had more time, we ____________ finished it.

• would have

• must have

• could have

• could

Sorry. I'm late, I ____________ drop the kids off at school.

• must have

• must not

• should have

• had to

As the car is small, it's much more ______________ on petrol.

• economical

• poor

• economic

• expensive

His ____________ of the generator is very famous.

• invention

• invent

• inventor

• inventive

I think the principal of this school ____________ give students more freedom in choosing the courses they want to study

• mind

• ought to

• would like

• had

The company anniversary party will take place ____________ August 26.

• on

• at

• on

• for

The ____________ of electronic devices is prohibited during takeoffs and landings.

• operation

• operate

• operated

• operator

Our records show that you stayed in our Grand Suite ____________ the dates of May 4 and May 7.

• in

• between

• among

• without

Don't ____________ until the night before an exam.

• be wait

• wait

• waiting

• had waited

I really enjoyed the disco. It was great, ____________?

• isn't it

• weren't it

• wasn't it

• is it