It was a Sunday morning. Mr David and bisa family were doing an interesting activity. they..... (ride) bikes. each of them... (ride) a bicycle. for safety riding, they....(wear) helmets. Mr. David....(take) his yougest child on the extra seat. jack, the oldest son, was riding a four wheels bicycle for kida. they were having fun with this activity.1. A. riding
b. are riding
c. was riding
d. were riding

2. A. ride
b. is riding
c. was riding
d. were riding

3. A. wear
b. is wearing
c. was wearing
d. were riding

4. A. takes
b. is taking
c. was taking
d. were taking ​