To our great ________ , grandmother's illness proved not to be as serious as we had feared.
The physics teacher once said that we first _____the lightning followed by thunders because light ______ faster than sound.
Only _______ as an interpreter _______ how important it is to grasp English.
_______ that they may eventually reduce the amount of labor needed on construction sites by 90 percent.
Mr. White promised to help me and _______ the next day.
There is plenty of rain in the southeast, there is little in the northwest.