问题
选择题
—Look, it ____ again.
—Yeah. This is the third snow we ____ this spring.
A．will snow; are having
B．has snowed; had had
C．is snowing; have had
D．snows; have had
答案
C
题目分析：考查时态：句意：--看，又下雪了。--Yeah，这是今年春天的第三场雪。第一空用现在进行时表示正在发生，第二空是 固定句型：This is the +序数词+time+从句，从句中的时态是现在完成时，选C。