Many difficulties have ______ as a result of the changeover to a new type of fuel.

Never before______ such a wonderful park, ______ I’d like to pay a visit again.

There ______ some juice but there ______ any bananas.— Don’t worry. Let’s go and buy some bananas.

Where is Tom this morning— He’s got a cold.— ____

It is said that 30% of the apples here _______ from abroad while 80% of the rice _____ grown here．