Notuntiltheearlyyearsofthe19th

Not until the early years of the 19th century____ what heat is.

A． man did know

B．man knew

C．didnot man know

D．did man know

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If you don’t know the meaning of the word ,you can ____the dictionary.

A．refer to

B．look into

C．look up

D．check

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Oh,it’s you! I ___you ___coming.

A．didn’t think; had been

B．don’t think; were

C．didn’t think; were

D．don’t think; had been

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John has put on so much weight recently that his mother has to ____all his trousers to his measure.

A．let out

B．give away

C．bring in

D．make up

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—Were you pleased with her answer?
--Not at all. In fact it couldn’t have been______.

A．worse

B．so better

C．better

D．the worst

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---Did you write to Mary last month? --No ,but I’ll ____ her over Christmas days.

A．be seen

B．be seeing

C．have seen

D．have been seeing

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