【判断题】There are three people who posted their comments in Aby's blog.
【单选题】A number of people have posted their own videos on the website You Tube, ____________their attempts to become “musicians”.
【单选题】A lot of people have posted messages on the Traveler's Tree message board.
【判断题】A lot of people have posted messages on the Traveler's Tree message board.
【简答题】同种花卉,在不同发育时期,对水分需求有什么不同?