David apologized for _______ to inform me of thechange in the plan.

What about going out this evening? —-Oh, I don’t knowI’ve got a bit of a headacheAnd, __________ ,John’s coming to see me, so I ought to stay in

Your essay is quite good: just _____ it _____ with a few illustrations and quotations.

“One Belt, One Road” (一带一路) will serve to ______ markets for China as well as other countries along.

I _________ the wrong thing. Can I use your eraser—Of course. Here you are.