_____ it many times, I still can’t make Tom understand what I said.
A.Explained B.Having explained
C.To explain D.Having been explained
High school students will be better aware of _____ the real world is like by participating in community service.
A.that B.how C.what D.where
Jane had many new friends in the school, ______ she shared her feelings.
A.with whom B.with which C.to whom D.for which
No matter how________, it is not necessarily lifeless.
A.dry may a desert be B.a desert may be dry
C.may a desert be dry D.dry a desert may be
The factory used 65 percent of the raw materials, the rest of which _____ saved for other purposes.
A.is B.were C.was D.are
—How can you know so much about the incident?
—It took place only 50 yards from ______ I was standing.
A.which B.that C.where D.what
