Lily ______ her homework when her mother came back home yesterday evening.
A.checks B.checked C.is checking D.was checking
My little brother always ______ his head when he agrees with me.
A.nods B.nodded C.is nodding D.has nodded
—______ wrote a letter to Mrs. Wang?
—Wang Bo, I think.
A.Who B.Why C.What D.When
We got up early ______ we could catch the first bus.
A.since B.when C.that D.so that
At last, Mary decided ______ Lily some flowers on her birthday.
A.give B.gives C.giving D.to give
More people think paper books are ______ to buy than e-books.
A.easy B.easier C.easiest D.the easiest
