问题
_______, when Marx was already _______, he found it was important to study the situation in Russia, so he began to learn Russian.
A:In 1870s, in his fifties
B:In 1870s, in fifties
C:In the 1870s, in fifties
D:In the 1870s, in his fifties;
B:In 1870s, in fifties
C:In the 1870s, in fifties
D:In the 1870s, in his fifties;
正确答案是：
同类题型
Our classmates who prefer to hold a party for him are________the majority.[ ]
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You are so _______to have brought your laptop. You see, mine is broken.
watch TV for another 15 minutes, Mum—Oh, dear, if you _____.