1. B. garden wooden expensive (adjective order: opinion - material - purpose)
2. D. more nervous (comparative adjective)
3. B. Many (plural noun requires plural quantifier)
4. B. keep in touch with (correct idiom)
5. A. so (linking word indicating consequence)
6. D. vast (describes a wide, unobstructed view)
7. D. isn't he (correct negative question tag)

CLOSEST in meaning:

1. C. courageous (brave is similar to courageous)
2. D. huge (giant is similar to huge)

OPPOSITE in meaning:

1. B. misfortune (good luck is opposite to misfortune)
2. D. flew away (landed safely is opposite to flew away)

Suitable response:

1. B. keep a balanced diet and do regular exercise. (offers relevant health advice)