We missed our train, and ________ the next train was delayed, ________ we had to wait for another two hours.

It sounds ＿＿＿＿＿ the singing of rails. 

We ________ go out when it rained.

Mr. Brown didn’t believe that such a little thing could _____ much.

Though having lived abroad for years, many Chinese still _________ the traditional customs.