It is a pity that the industrial cities _____ in the nineteenth century do not attract visitors.
Fortunately it happened at night. If the hurricane ________ during the daytime, there ________ more deaths.
We were stuck on the way to the scenic spot, otherwise we ________ lots of fun there.
________ it rain tomorrow, we should have to put off the visit to the Yangpu Bridge.
If we had taken such effective measures much earlier, the river ________ so seriously now.
George is going to talk about the geography of his country, but I'd rather he ________ more on its culture.