---You may find the key to the maths problem on page 107 . ---Ah, it’s so simple . I wonder why I of that .
They suggested not only to the party but also give a performance.
The gas tank____________ twenty gallons of gas, but now it may____________ only three gallons.
--The two pairs of shoes are __________ the same colour. --But they are different __________ colour.
Mr. Smith__________ the roll of film as soon as he arrived home
The shop manager always says to his assistants, "We can never be customers.