1 đặtcác động từ trong ngoặc ở dạng chính xác
a,I(be)......to Viet Nam for 2 years
b,the first olympic games(take).....place in Greece in 776
c,people(start)...to use computer about 50 years ago
d,what is that noise?
-the chilren(play).... tug ò war
e,what ...you(do)....last weekend?
-I(cylce)...round the lake with my friends.Then I(watch)......TV in the afternoon