--- ____ do you study for tests?---I study math by ____ lots of exercises.
The box was too heavy for me to carry, ___I pulled it into my room.
The computer is broken. ___it___ today?
Alice explains things very well, what she says can be understood very ___.
—The bread is delicious.—It must taste ___with some jam in it.
Jack is a famous writer. ___new book is very popular.