Question

Write the gerund/infinitive form of the verbs in the blanks.
We astronauts must keep on (prepare) for our space launch.
Some say it's no use (travel) to distant planets, because it takes too long.
But we really want (visit) other planets and find out if life exists on them.
Can you imagine (walk) up to a Martian and shaking hands and (say), "Hello, how are you?" (help) you​

Answer 1

Answer:

1- preparing

2- traveling

3-to visit

4- walking

5- saying

6- to help