Your daughter has two children，doesn’t she?-That’s right.She ________ in 1993.[ ]

What will you do if it _____ rain tomorrow — I’m not sure.

See the flags on top of the buildingThat’s ____ we did this morning.

When you go to a foreign country, you must try to the customs there in order to recover from the culture shock quickly.

Not until actually ________ with water shortage ________ appreciate the value of water to a region.