He earned enough money to start his own business _____ offering guide services _____ tourists

Many young people in the West areexpected to leave ______ could be life’s most important decision —marriage—almost entirely up to luck.

When he was asked suddenly about the matter ,he couldn’t_____an answer at once.

Do you mind if I smoke here in the living room? — Well, if you ___. But I’d rather you didn’t.

is the ball —It’s under the table.