—You are right.
A:Useful
B:used
C:use
我国通过建立以法律为核心,以立法保障和司法保障为主要内容的权利保障体制,保障公民的权利( )
从方框中选择恰当的词或短语并用其正确的形式填空(每个词或短语只能用一次)。
busy; difficult; dream of; be covered live ; arrive in; be away;
row a boat; in one's fifties; out of control ; have a chat with