The students (a)   the passage if their parents buy the book. (read)

You (a)   that pen if you don't keep it. (lose)

If the day is rainy like now, we (a)   at home. (stay)

If you don't behave well, you (a)   out with your friends. (go)

If the engineer (a)   the project on time, we will work with him. (present)

if you (a)   the luggage here, there won't be any problem. (keep)

if you walk with a limp, you (a)   your back. (hurt)

If you (a)   trash on the floor, you affect the environment. (throw)

If I answer this questionnaire well, I (a)   a ten. (get)