WE WORKED VERY HARD YESTERDAY. IT WAS A...DAY. A. SHIPBUILDING...

30 BAI TRAC NGHIEM VOI KEYS FOR 9 P

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26. We worked very hard yesterday. It was a...day.

A. shipbuilding B. coalmining

A. tired B. tiring C. tire D. tiringly

C. soap industry D. chemical and soap industry