---You don’t know what great difficulty I had ________ to get the two tickets.---But the film is really worth _________ twice.
–Kangkang told me he would have a party this evening. Are you going there? --I’m invited, too. But I have a lot of homework to do this evening, and I wonder _____.
We'll go on a field trip if it _______ this weekend.
He ___ work in that company ___.
----- Did you ___ ride a bike to work? ----- Yes, but I’m used ___ a bus now.
The soft music sounds ____. We are all listening ____.