… all three of us live in constant dread knowing that at any time disaster can strike …:
选项：

A:.…Dad causes all of us great anxiety because we know he may do things to embarrass us at any time…
B:.…all three of us are constantly worried when Dad will get himself into trouble the next time…
C:.…two of us are constantly worried when Dad will get himself into trouble the next time…
D:.…Dad causes all of us great anxiety because we don’t know he may do things to embarrass us at any time…