Cho dạng đúng của từ trong ngoặc :
1 . He was attacked for having put his ( sign ) .............. to the deal
2 . How much ( teach ) .......... do you actually do ?
3 . The explosion ( complete ) ......................... destroyed the building
4 . May be one of our ( assit ) ................... can help you make your choice
5 . I should have got a better price for the car , but I'm not much of a ( busy ) ....................