Final answer:
The sentences have been completed using the correct present simple or present continuous tense, demonstrating how verbs change form to indicate timing of actions in English.
Step-by-step explanation:
The student is asking to put the verbs provided in either present simple or present continuous tense. Here are the verbs correctly put into the appropriate present tense:
- The baby is falling.
- The bus arrives at 2 o'clock tomorrow.
- Hi! What are you doing? I am talking to Tom on the phone.
- I'm so happy. I own this house now.
- The Earth is round.
- My friend has a swimming pool, and we swim often.
- Tom usually jogs, but today he is hiking.
- Tom is a scientist. He works in a laboratory.
These examples demonstrate the use of both present simple and present continuous tenses as applied to various subjects and situations. In English, the form of the verb changes to indicate whether something is happening currently or has happened already. Choosing the correct verb tense for each sentence is important for clear and accurate communication.