–Were you at school when he came to see you?–Yes, I ______ a math class.A. was having B. had C. am having
The song ____My heart will go on is liked by the young people
_______terrible weather we’ve been having these days!
---What’s ______population of China? ---China has_____ population of 1.3 billion.
Taking this medicine, if ________, will certainly do damage to your health, as the doctor advises.
However _______, it’s worth it and I’ll get it .