Anna       a blue skirt today.

I had a hard time _________ where the post office is.

My father _________ Beijing on business for three days. He will be back in two days.

—Oh , I have a terrible toothache.
—You’d better    see a dentist and have your bad teeth     out.

— I am afraid of our head teacher. How about you?
— Me too. He is so serious that the class ____ when he comes into the classroom.

—This camera is very similar ________ that one.
—Yes. I have some trouble ________ their differences.

－Math is difficult for me. How I wish to improve it!
－Don’t lose your confidence. I believe you will ______ it if you keep trying.

Would you mind  ________ me how ________ English words?

― How do you feel when you watch the national flag go up?
― It makes me ________ very proud.

We should never ________till tomorrow what we can do today.