Exercise 1: Completes the following sentences with  comparatives or superlatives. Use the words in brackets and add any other necessary words.
1.    Sometimes I feel all of my friends are (intelligent)……………….. I am, and yet, sometimes they tell me that they think I am (smart)……………..person …..............the class.
2.    Mercury is (close)…………..planet to the sun. It moves around the sun (fast)……………any other planet in the solar system.
3.    One of (popular) ………….holidays……………Vietnam is New year’s.
4.    In terms of area, (large) ……..state………..United states is Alaska, but it has one of (small) …………..populations………….all the states.
5.    Nothing is (important)……….good health. Certainly, gaining health is much (important)…………enjoying good health.
6.    You can trust her. You will never meet a (honest)………….person…………she is.
7.    Both Bangkok and Venice are famous for their waterways, but Bangkok has (extensive) …….canals…………….Venice has.
8.    I feel (safe)………in a plane …………I do in a car.
9.    My friend has studied many languages. He thinks Japanese is (difficult)…………all the languages he has studied.
10.    One of (bad)………..nuclear accidents…………..the world occurred at Chernobyl in 1986.
11.    Jakarta is (large)…….city in Indonesia.
12.    Mountain climbing takes (strength)……………….walking on a level path.
13.    The (short)………….distance between two points is straight line.
14.    Cheese usually tastes (good)……………..at room temperature than it does just after you take it out of the refrigerator.
15.    I think learning a second language is (hard)…………learning chemistry or mathematics.