III. Choose the best option to complete the following sentences:
Many species have become extinct each year before biologists can identify them.
A.destroy
B.drain
C.discover
D.endanger

III. Choose the best option to complete the following sentences:
We spend more time watching TV than reading books. But ___ fact, TV has not killed reading.
A.for
B.in
C.at
D.on

III. Choose the best option to complete the following sentences:
- “I’m taking my diving contest tomorrow.” - “__________.”
A.Luck!
B.Best wishes!
C.Good luck!
D.Good chance!

III. Choose the best option to complete the following sentences:
______ how to use this vacuum cleaner and I'll help you clean the house.
A.If you show me
B.When you show me
C.Show me
D.Unless you show me

II. Choose the word whose stress pattern is different from that of the others:
A.reduce
B.serious
C.swallow
D.separate

____ (2. threaten)
A.threatened
B.threatening
C.threateningly
D.unthreaten

A.penalize
B.penalty
C.center
D.eject

A.punch
B.touching
C.match
D.synchronized

Give the correct tense / form of the verbs in the brackets.
Dear Mary.
Thank you for your letter which I received last week. I was glad to hear from you. You said you _____(1. see) John recently, but you didn't say how he_____ (2. be). Please let me know and give him my regard.
I ____(3. be) in London for three months and I ________(4. enjoy) life here very much. I ____(5. work) hard since I ____(6. arrive) and everyone ______(7. be) kind to me.
You said you _____(8. come) to see me this Christmas. I hope you_____ (9. not change) your mind. Let me ______(10. know) what date you are thinking of arriving.
With love,David
_____(10. know)
A.to know
B.know
C.known
D.knowning

Give the correct tense / form of the verbs in the brackets.
Dear Mary.
Thank you for your letter which I received last week. I was glad to hear from you. You said you _____(1. see) John recently, but you didn't say how he_____ (2. be). Please let me know and give him my regard.
I ____(3. be) in London for three months and I ________(4. enjoy) life here very much. I ____(5. work) hard since I ____(6. arrive) and everyone ______(7. be) kind to me.
You said you _____(8. come) to see me this Christmas. I hope you_____ (9. not change) your mind. Let me ______(10. know) what date you are thinking of arriving.
With love,David
____(3. be)
A.was
B.am
C.have been
D.were