Помогите пожалуйста с английским... 1. Since then the monster ...

Vasy

Помогите пожалуйста с английским...
1. Since then the monster ... at least once a year.
a) saw; b) has been seen; c) has seen; d) in being seen
 
2. The doctor asked how long ... the medicine.
a) would I take; b) I had been taking; c) had taken; d) I took
 
3. I can give you this book. You ... go to the library.
a) wouldn't; b) needn't c) may not; d) can't
 
4. The news made Jon ... .
a) laugh; b) to laugh; c) laughing; d) laughed