【C6】A．whatB．thoseC．asD．which

In fact he had done ______ he could do to help the poor.A．whatB．whichC．asD．all which

【C6】A．whatB．thatC．howD．why

【C6】A．No matter howB．AsC．As long asD．Where

【C6】A．onB．forC．asD．in

【C6】A．unlessB．ifC．asD．since

【C6】A．uponB．forC．asD．to