I SPEND HALF A YEAR ________ THIS BOAT. A. TO BUILD B. BUILDING C....

20. - TÀI LIỆU UNIVERSITY ENGLISH EXAM TEST 9 POT
TÀI LIỆU UNIVERSITY ENGLISH EXAM TEST 9 POT
20. I spend half a year ________ this boat. A. to build B. building C. on building D. B&C