Will you see to _______ that the luggage is brought back?

—Silly me! I forget what my luggage looks like?—What do you think of________over there?

---Susan, go and join your sister cleaning the yard. --- Why ___? John is sitting there doing nothing. 

—Would you like tea or coffee? —_____________is ok. I’d like water.

Understanding the cultural habits of another nation，especially ________containing as many different cultures as America，is a difficult thing.