—Linda, I called you this morning, but nobody answered the phone. —I'm sorry. I      a picnic with my family then.
#52787
A
have
B
had
C
am having
D
was having
推荐题目
The policeman told us __________ the street when the traffic light was red. 
#56323
A
not cross
B
didn’t cross
C
not crossing
D
not to cross
The girl ____ the woman. Maybe she is her daughter.
#61807
A
take care
B
takes after
C
takes off
D
look after
Everyone should make a contribution         the environment.
#60222
A
to protect
B
to protecting
C
protects
D
protected