You may know only a few German phrases now, but you’ll soon pick _____ more if you stay in Germany longer.
A. to
B. down
C. out
D. up
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5. Many lakes and rivers have been ________by industrial waste.
A. smog
B. pollution
C. polluted
D. smoging
6. The weather is __________ warm for this time of year.
A. concern
B. contast
C. usual
D. usually
7. There are reports of ___________ flooding in northern France.
A. widespread
B. work
C. done
D. wide
8. You must ________ your own feelings and decide for yourself.
A. trust
B. true
C. tone
D. tree