Page 63 - Grammar For YDT - 12

Tenses - Test - 3

9. Spice plants, such as garlic, onion or ginger, ---- 13. As the sales of the cars ---- in recent years, traffic
compounds which, when added to food, ---- it a congestion ---- a bigger problem for the cities.
distinctive flavour.
A) have grown / is becoming
A) are containing / gave
B) have been growing / became
B) will contain / had given
C) grew / has become
C) have been containing / have given
D) had grown / becomes
D) have contained / will give
E) will grow / become
E) contain / give

10. Even though scientists ---- tremendous progress 14. There is evidence that a terrestrial ancestor of all the
toward developing medications, the need for science modern turtles ---- the world long before the dinosaurs
and innovation ----. ----.

A) made / had persisted A) has been inhabiting / are appearing
B) have made / persists B) was inhabiting / will appear
C) are making / has persisted C) will inhabit / will have appeared

D) make / will have persisted D) inhabits / have appeared
E) have been making / will persist E) had inhabited / appeared

11. Over the last 50 years, scientists ---- many important 15. Technological advances ---- to offer hope currently
coding methods, and they ---- crucial in many about the fact that wind power ---- to be accepted as
technological achievements. a reliable and important source of electricity.
A) had been devising / proved A) are beginning / will come
B) devised / prove B) will begin / is coming

C) have been devising / were proving C) begin / came
D) devise / are proving D) began / would come
E) have devised / have proved E) have begun / comes

12. In 1990, the U.S. government ---- funding its own 16. Although many people ---- what tornadoes and their
vaccine development program and ---- it to the destructive power can do, few people ---- their real
responsibility of the Ministry of Health. causes and what to do in case of a tornado.
A) was beginning / had committed A) were fearing / knew
B) has begun / has committed B) feared / will know
C) began / committed C) will fear / will have known
D) will begin / are committing D) fear / know

E) had begun / had been committing E) have feared / had known

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