Fill in the blanks with since/ for. a. I have been swimming in the river …….two hours.

b. They have been chanting Ramayana ……….7 O’clock.

c. Aarya has been writing a letter ………..thirty minutes.

d. John has been living in refugee camp ………2018.

e. It has been raining …….. a long time.

f. PM has been taking meeting on the issue of J&K ……….three hours.

g. All the members of institute have been taking virtual meeting ……..9 O’clock.​

See explanation

Explanation:

It should be noted that while for is used with a period of time, on the other hand, since is used when one wants to refer to a specific point in time.

a. I have been swimming in the river (for) two hours.

b. They have been chanting Ramayana (since) 7 O’clock.

c. Aarya has been writing a letter (for) thirty minutes.

d. John has been living in refugee camp (since) 2018.

e. It has been raining (for) a long time.

f. PM has been taking meeting on the issue of J&K (for) three hours.

g. All the members of institute have been taking virtual meeting (since) 9 O’clock