What do you think of the grammar book— Oh, it really is ________ useful reference book, which is worth reading ________ second time.

My father ________ my brother for driving but he wanted to pick ________ the knowledge of the computer during his spare time.[ ]

Would you like to watch the basketball match with me this evening—________. I like basketball very much.

The course normally attracts 20 students per year, ____ up to half will be from overseas.

The flu is believed ______ by viruses that like toreproduce in the cells inside the human nose and throat