If you happen to get lost in the wild, you’d better stay ______ you are and wait for help.
A.why B.where C.who D.what
If you live in the country or have ever visited there, ____ are that you have heard birds singing to welcome the new day.
A.thinks B.facts C.chances D.possibilities
______ you may be right, I can’t agree with you.
A.While B.As C.If D.Since
______ remains doubtful ______ this is an important discovery.
A.That; whether B.That; that C.It; whether D.It; that
These two kinds of cell phones differ ________ shape, but they are similar ________ each other in some functions.
A.from; with B.in; to C.in; with D.from; to
There are some differences between American and British English, but do you know _____the differences came into being?
A.that B.what C.which D.how
