By comparison with 1998, it decreased (dropped / fell) from 10 to 5 percent (to 15 percent / by 15 percent).

It account for 15 percent of the total.

There were 100 traffic accidents in April, and increase of 5 percent in a five-month period.

By 1999, only (less than / more than / almost / about / over / as many as) three quarters (40 percent of / one out of five / one in four) college population (graduates / housewives) as against (as compared with) last year (1998) preferred to (liked)

3. 结尾

From what has been discussed above (Taking into account all these factors / Judging from all evidence offered), we may safely draw (reach / come to / arrive at) the conclusion that

All the evidence (analysis) supports (justifies / confirms / warrants / points to) a(n) unshakable (unmistakable / sound / just) conclusion that

It is high time that we place (lay / put) great ( special / considerable) emphasis on the improvement (development / increase / promotion) of

It is high time that we put an end to the deep-seated (unhealthy / undesirable / deplorable) situation (tendency / phenomenon) of

We must look (search / all / cry) for an immediate action (method / measure), because the present (current) situation (phenomenon / tendency / state / attitude) of , if permitted (allowed) to continue (proceed), will surely (certainly) lead to (result in) the end (destruction / heavy cost) of

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