Cross-continental travel wouldn’t have

become possible if early travellers _____ invented boats.

Rene Descartes specified the position of

flying insect in 3D space: two walls and a ceiling. That is how co-ordinate

geometry _____ .

We stepped ________ the house ________

the garden.

How much money ________ in the bank?

By the time I got to the stadium they

______ already ______ for ten minutes.

The cars _____ very slowly on the motorway

today. Workmen _____ the road.

A: I’m here to ask about driving lessons. B:_____

any driving lessons before?

If he spoke better English he would look

for a job abroad, _____?

His clothes are in a mess because he ______

the house all morning.

While I __________ the joke, I suddenly

realised I ______________ the ending!