III.

1. Is

2. Who

3. Will

4. Would

5. Where

6. When

7. at

8. see

IV.

1. A(do→will do)

2. C(in→on)

3. A(has→have)

4. B(by→going to)

5. B(make→go)

V.

1. I think I'll explore the caves.

2. Phuong and Hoa may build sandcastles on the beach.

3. My family and I will swim in the sea.

4. They'll be on the seaside at Sunday.

5. I think I'll visit the mountains tomorrow.

@Nap_

E.x III :

1. is

2. Who

3. Will

4. Would

5. Where

6. When

7. at

8. see

E.x IV ;

1. A

2. D

3. A

4. A

5. B

E.x V :

1. I think I'll explore the caves.

2. Phuong and Hoa may build sandcastle on the beach.

3. My family and I will swim in the sea.

4. They will at the seaside on Sunday.

5. I think I'll visit the mountain tomorrow.

@LonelyTeam@