问题
选择题
I _____ on a sofa because my grandparents have come for the weekend.
A.slept
B.was sleeping
C.have slept
D.am sleeping
答案
答案:D
从题干中my grandparents have come for the weekend判断主句应用现在的时态,而且我只是因为祖父母来度周末临时睡沙发,所以选D,现在进行时表示临时性的动作。