细胞核中有染色体,染色体是由___________和______________组成。其中_________是主要的遗传物质。在DNA上存在着许多___________,控制着生物可遗传的性状。
I am happy to know that you will come Zunyi and looking forward to (meet) you at the airport.
I don't like soap operas because I think they are (meaning).
After discussing it for two days, they haven't reached an (agree) yet.
On my last birthday, my brother bought (I)a book as a gift.
Simon is an interesting person and he gets excited (easy).