Although they are very busy, our parents still _______ a lot of time to us.
_____ students are practicing _____ English with each other at the English corner.
You'd better _______ your score and see if you have passed the exam.
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.