Ing ali nedoločnik?

Vprašanje 1
Complete the sentence by putting the verb in brackets into the correct form:
1. No matter what, you need to keep on (try) .
2. You shouldn't put off (go) to the doctor.
3. He needs to work on (improve) his writing.
4. In order to lose weight, she must cut down on (eat) sweets.
5. Why don't you do away with (complain) .
6. His story turned out (be) a lie.