Could someone help with these grammar questions?

[sirikaur]

I would really appreciate someone's help with this. Thank you so much.

1. Although ______ Spanish, he attended the course.

A. he was knowing B. he is knowing C . having a knowledge of D. knows



8. Frank almost never received any education, ______?

A. would he B. did he C. didn’t he D. wouldn’t he



16. Under this ______ pressure some of the rocks even became liquid.

A. intensive B. weighty C. intense D. bulky



22. If a substance is dissolved in water or heated, it may ______ a gas.

A. give into B. give over C. give off D. give away

[Josef Essberger]

1C (grammatically correct but idiomatically strange)
8B
16C
22C