He’s never been to Canada before, _____ —–Sorry, I don’t know.

The secretary worked late into the night,______ a long speech for the president．

In Bangkok severe flooding, many major roads ________ north, towards the areas worst affectedby the flooding, were largely impassable. [ ]

Mum, why don’t you have the robot ________ housework for you— Oh, it caught a virus, I should have it _________ at once.

Unlike watching TV, reading is a highly active process________it requires attention as well as memory and imagination.[ ]