Question

1. I ____ a letter when he came to my house.
a) am writing
b) was writing
c) will write
d) wrote
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Answer 1

Answer:

was writing is the correct answer because came is a past participal

Explanation:

hope helpful for you

Answer 2

Answer:

I was writing a letter when he came to my house.

Explanation:

• 'was writing' is the past continuous form.
• The Past Continuous is used to denote an action going on at some time in the past.
• The time of the action may or may not be indicated.
• In the given sentence , the Past Continuous and Simple Past are used together when a new action (he came to my house) happened in the middle of a longer action (I was writing a letter).
• The Simple Past is used for the New Action.