--- What’s the use of this kind of fuel(燃料) ?--- It can make the train __________ fast.
Our class are planning _____ one-day trip to West Hill. _____ trip must be fun, I think.
You need to ______ more. Don’t always be at the desk busy doing your _________.
Easter Day usually comes ___ March or April. It is getting warm ___ this time of year.
-- How do you like May Day? -- ________________.
We will play tricks on them, if they _______ us a treat of some apples.