Answer:
1) I <u>can't</u> go with you.
Interrogative: Can't I go with you?
2) They <u>can</u> paint the house.
Interrogative: Can they paint the house?
3) I <u>can</u> help you.
Interrogative: Can I help you?
4) <u>Can</u> you come here?
Interrogative: Can you come here?
5) You <u>can</u> stop here.
Interrogative: Can you stop here?
6) <u>Can</u> you obtain a visitor's visa?
Interrogative: <u>Can</u> you obtain a visitor's visa?
7) I <u>can't</u> lift this weight.
Interrogative: Can I not lift this weight?
8) I <u>can't</u> come sooner.
Interrogative: Can't I come sooner?
9) She <u>can't</u> come this summer.
Interrogative: can't she come this summer?
10) He <u>can</u> finish the race.
Interrogative: Can he finish the race?
11) I <u>can't</u> answer the question.
Interrogative: Can't I help you?
12) we <u>can</u> score a goal.
Interrogative: Can we score a goal?
13) We <u>can</u> help you.
Interrogative: Can we help you?
14) <u>Can</u> you sing?
Interrogative: Can you sing?
15) They <u>can't</u> enter the party.
Interrogative: Can they not enter the party?
16) <u>Can</u> you enter?
Interrogative: Can you enter?
17) I <u>can't</u> drink tea.
Interrogative: Can't I drink tea?
18) We <u>can't</u> drink beer.
Interrogative: Can't we drink beer?
19) I <u>can't</u> drive for two months.
Interrogative: Can't I drive for two months?
20) The clown <u>can</u> act.
Interrogative: Can the clown act?
