--I hear Jack Chan will come to Laiwu next week. --Really? _______ he comes, my younger sister will be very happy,
Usually we get ________ about something and end up _________ in Chinese.
We can’t fix this machine well. Can you show us ___?
Did you see them ____ basketball this morning?
He didn’t study hard, so he was afraid ______ in the exam.
I had some problems _____ my homework.