【简答题】用合适的介词或副词填空 1. I will try my best to do the business _________ hand. 2. Stop talking and concentrate _________ your work. 3. I’ve seen them playing the piano ________ several occasions. 4. Aim for the...
【简答题】用恰当的关系词或者介词+关系词填空。 1. This is the biggest lab ______ we have ever built in our university. 2. Air, ______ we breathe every day, is around us all the time. 3. He is a man of great knowledge, ______ ___...