He always helps us ________ he is doing when we turn to him for help.
#33389
A
whenever
B
whatever
C
whichever
D
however
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—Henry, the phone is ringing. Do you want me to go? —No ,sit still.    .
#80537
A
I’ll get it
B
I am to get it
C
I’m getting it
D
I am about to get it
No one knows exactly ______ this important discovery was made.
#33284
A
that   
B
that how   
C
what   
D
when