1.

• (A) it has
• (B) is having
• (C) which is having
• (D) has

2.

• (A) its sides
• (B) the sides are
• (C) it is the side of
• (D) all sides by

3.

• (A) The
• (B) The fastest
• (C) The fastest dog
• (D) The fastest dog, the

4.

• (A) gets sun
• (B) sunning
• (C) the sun
• (D) sunny

5.

• (A) when does the Earth s atmosphere trap
• (B) does the Earth's atmosphere trap
• (C) when the Earth's atmosphere traps
• (D) the Earth's atmosphere traps

6.

• (A) takes
• (B) it takes
• (C) which takes
• (D) took

7.

• (A) using gene therapy
• (B) use gene therapy
• (C) they use
• (D) gene therapy uses

8.

• (A) While some types of coral reefs
• (B) Some types of coral reefs
• (C) There are many types of coral reefs
• (D) Coral reefs

9.

• (A) what
• (B) which
• (C) what they
• (D) which they

10.

• (A) they can afford
• (B) they can afford it
• (C) what is affordable
• (D) able to afford