Title: Default for Exercise 7 – Word Choice (Basic)
Course: Applied English for Science and Technology

Q: Choose the correct usage in the sentences below.

1. We produced a small [...] of automobiles this year – only 530,000.

2. The serum had serious side [...].

3. Every 250 years, Pluto completes [...] orbit about the sun.

4. When a photon in that energy range strikes the atom, the atom [...] one of its outer electrons.

5. The talk centered [...] virtual work.

6. This report discusses how the eruption [...] the surrounding terrain.

7. Last year, Japan [...] the world in automobile sales.

8. We then sent the broken part to John Brooks, [...] the laser group had recommended.

9. Reduced weight was the [...] reason for choosing aluminium.

10. Neither the engineers nor the technicians [...] hurt in the blaze.

11. We produced a small number of automobiles this year, even [...] than last year.

12. All the bombings involved explosives [...] contained the chemicals PETN and RDX.

13. All the bombings involved Semtex [...] contains the chemicals PETN and RDX.

14. The talk was mainly on the [...] of virtual work.

15. [...] the antibodies will destroy the cancer cells.
A: number; effects; its; loses; on; affected; led; whom; principal; were; fewer; that; , which; principle; It is hoped that
Gap 1 offers: amount; number
Gap 2 offers: affects; effects
Gap 3 offers: its; it's
Gap 4 offers: looses; loses
Gap 5 offers: in; on
Gap 6 offers: affected; effected
Gap 7 offers: lead; led
Gap 8 offers: who; whom
Gap 9 offers: principal; principle
Gap 10 offers: were; were not
Gap 11 offers: fewer; less
Gap 12 offers: that; , which
Gap 13 offers: that; , which
Gap 14 offers: principal; principle
Gap 15 offers: Hopefully,; It is hoped that