Advertisements (Quảng cáo)
Invented or was invented ? Use the correct form of the verb in brackets.
Phát minh hay được phát mình? Sử dụng dạng đúng của các từ dưới đây.
a) Hubert Booth __________ a compact and modem vacuum cleaner.
b) Bottle-making machinery __________ by Michael J. Owens.
c) The air conditioner __________ by Willis Carrier in 1902.
d) The crossword puzzle __________ by Arthur Wynne.
e) Clarence Birdseye __________ frozen food.
f) The Computer mouse______________ by Douglas Engelbart.
g) The first credit card________________ by Ralph Schneider.
h) Color photography by Auguste and Louis Lumiere.
i) Igor Sikorsky_______________ the first successful helicopter.
j) The ballpoint pen________________ by Ladislo Biro in 1938.
Hướng dẫn giải
Advertisements (Quảng cáo)
a. invented
b. was invented
c. was invented
d. was invented
e. invented
f. was invented
g. was invented
h. was invented
i. invented
j. was invented