My father didn't go to the zoo with us ________ he was very busy.
A: so
B: because
C: when
D: while
A: so
B: because
C: when
D: while
举一反三
- My father didn ’ t travel much when he was young , so he decided to ______ lost time after retirement .
- -When<br/>did you go to bed last night?-I<br/>didn't go to bed ____my father got home. A: until B: while C: after D: when
- He didn't go to school yesterday ______ he was ill. A: because B: if C: so D: that
- Peter won’t go with Julia because __________. A: he’s very busy B: the traffic is busy C: he has already heard it
- My friend agreed to go along with me, but he didn't sound very _____________.