Do you know ________ Jenny comes to school every day?一Of course I do．She rides her bike．

Tom realized that he ________ his physics book at home when he reached school．

. There are so many kinds of tape-recorders on sale that I can’t make up my mind ____to buy.

I just can’t stop worrying about the result of the job interview.–_______ . There’s nothing you can do now but wait.

Smart phones are more and more popular now.—So they are. But they still ________ too much.