II. Supply the correct form of the words in parentheses to complete the sentences
1. Social skills will help astronauts work has ........... together. (harmonious )
2.The .......... of English form helps new learners remember words easily. (simple)
3. The first phase ........... astronauts to pass a swimming test in a flight suit. (requirement)
4. Honestly, a meteorite wasn't as ........ as I'd expected. (impress)