A. given B. giving C. being given D. be given
A. of seeing B. of being seen C. to be seen D. to have seen
A. To see; to laugh B. Seeing; to laugh C. Seeing; laughing D. To see; laughing
A. doing; being done B. doing; doing C. to be done; to be done D. to be done; being done
A. For cook B. To cooking Cooking D. Cook
A. developing B. develop C. developed D. being developed
A. changed B. changing C. being changed D. change
A. coughing B. to cough C. that he coughed D. cough
A. on listen B. to listening C. listening D. listened
微信支付 
支付宝支付