Choose on of the word's in the brackets 1.I have two(box/boxes) of apples 2.A (bus/buses)is big vehicle 3.I need pair of(a glass/glasses) 4.we have to engglish

Choose on of the word's in the brackets 1.I have two(box/boxes) of apples 2.A (bus/buses)is big vehicle 3.I need pair of(a glass/glasses) 4.we have to engglish (teacher/teachers)