Billy, come and give me a hand with cooking.
Giải chi tiết:
Đáp án là B. Give sb a hand = help : giúp đỡ
Attempt (v): cố gắng; prepared (adj, PII ): được chuẩn bị; busy (adj): bận rộn
Population growth rates vary among regions and even among countries within the same region.
Biogas can be utilized for electricity production, cooking, space heating, water heating and process heating.