Read what Sharon says about a typical working day: Sharon: I usually get up at 7 o'clock and have a big breakfast. I walk to work, which takes me about half an hour. I start work at 8:45. I never have lunch. I finish work at 5 o'clock. I 'm always tired when I get home. I usually cook a meal in the evening. I don't usually go out. I go to bed at about 11 o' clock. I always sleep well. Yesterday was a typical working day for Sharon. Complete the given sentence using the correct tense to describe her day at work yesterday. _______ at 8.45.

The correct answer is D. She started work.

The sentence is about Sharon's day at work yesterday. The past simple tense is used to talk about completed actions or events that happened in the past. In this case, Sharon started work at 8:45 yesterday, so the past simple tense is the most appropriate tense to use.

The other options are incorrect because they do not use the past simple tense. Option A, She starts work, is in the present simple tense, which is used to talk about general truths or habits. Option B, She is starting work, is in the present continuous tense, which is used to talk about actions that are happening now or that are happening at a specific time in the present. Option C, She has started work, is in the present perfect tense, which is used to talk about actions that have happened or been completed before now.

In conclusion, the correct answer is D. She started work.