1。He's got himself into a dangerous situation____he is likely to lose control over the plane。
a。where b。which c。while d。
why
2。Poor speaker of Japanese___I was,I will managed to make myself understood。
a。when b。even c。though d。who
3。
--I haven't heard from Henry for a long time。
--What do you suppose ____to him?
a。was happening b。to happen c。has happened d。
had happened
4。There is an office building behind the park,_____stand two tall trees。
a,of which the gate b。at the gate of which c。
at the gate d。which of the gate。