问题补充：
There many trees in front of my house now.
A. is
B. are
C. was
D. Were
答案：
A. is
(答案→)B. are
C. was
D. Were
解析：There be句型表示“某地(或某时)存在有某人(或某物)，而并非某地(某人、某物或某时)拥有什么东西”，句中有若干个名词作主语，动词be常与后面主语中的第一个名词在数上一致。句意：现在我的房子前面有许多树。结合语境可知本句描述的是客观性的事实，故用一般现在时态。Many trees是复数形式，故谓语动词用复数。选B。
