What a table! I’ve never seen such a thing before. It is _____ it is long.

依次填入下列横线处的词语，最恰当的一组是( )研究伊始，该团队选取了华北、西北地区生产的几十种马铃薯进行分析________，从营养成分、________、硬度等方面多次试验，________确定了适合加工马铃薯面条的两个品种。随后，又从诸多面粉种类中试验选取了______的小麦粉加以调试。

Tom is ___ English boy. He goes to ____school by bus.

With summer coming on, the weather gets hot _________.

Why do you look so worried—I’m expecting a call from my son. He London for three days.