单项选择题
-What were you up to when they came in the office?-I for a while and some typing. A.
was playing; was going to do B.
played; did C.
had played; was going to do D.
had played; did
-What were you up to when they came in the office?-I for a while and some typing. A.
was playing; was going to do B.
played; did C.
had played; was going to do D.
had played; did