7. My son (study) for the test last weekend.
a. studys
b. studies
c. studyir
d.studied
8.We (spend) some time in the Alps last summer
a.spending
b.studies
c.spent
d.spended
9.The chinese (build) the Wall many centuries ago.
a.builded
b.building
c.builds
d.built
10.Bob (buy) tickets for Sting's Concert and (give) one to me three days ago.
a.bought/gave
b.buys/gives
c.buying/giving
d.brought /given​