Give the correct forms of the verbs in brackets using simple past or present perfect. (Cho dạng đúng của động từ trong ngoặc sử dụng thì quá khứ đơn hoặc thì hiện tại hoàn thành.) 1.The floor looks dirty. I'm sure you (not clean up) 2.(you/ enjoy) the party last night? 3.My bicycle isn't here. I think someone (just take) it. 4.They (know) each other since they were children. 5.They are the most kind-hearted people he (ever meet) 6.He was late yesterday because he stuck in the traffic jam. 7.Last year, he (donate) 99% of his fortune to charitable organizations. 8.I (be) a member of this non-profit organization since 1996 9.She (make) many new friends since she joined this English club. 10.Last month I (feel) happy when I cooked a meal for the elderly at a nursing home.