Final answer:
The correct answers to fill in the blanks are: 'I (think) sends', 'My mother is calling', 'My phone is ringing'.
Step-by-step explanation:
The correct answers to fill in the blanks are:
- I (think) sends
- My mother is calling
- My phone is ringing
These answers are in both the simple present and present progressive forms. In the first blank, we use the simple present form 'sends' because it is a general statement about the student receiving letters every week. In the second blank, we use the present progressive form 'is calling' to describe an action happening at the moment of speaking. In the last blank, we use the present progressive form 'is ringing' to describe an action happening at the moment of speaking.
Learn more about fill in the blanks with simple present and present progressive verbs