20. I _______ phone my mom now and tell her that I’ve arrived at the hotel. A. need B. can C. must D. had to 21. Daniel _______ never come to that store anymore. A. will B. dare C. should...

Let's go through each exercise and find the correct answer. 20. I _______ phone my mom now and tell her that I’ve arrived at the hotel. Correct answer: must Explanation: The sentence implies that it's necessary or obligatory to phone your mom to let her know you've arrived at the hotel. 21. Daniel _______ never come to that store anymore. Correct answer: dare Explanation: The sentence implies that Daniel is not brave enough or doesn't have the courage to come to that store anymore. 22. Passengers _______ buy tickets online. It’s much more convenient. Correct answer: can Explanation: The sentence implies that passengers have the ability or option to buy tickets online, which is more convenient. 23. I _______ you had got home earlier last night. Correct answer: would rather Explanation: The sentence implies that the speaker wishes or prefers that the person had gotten home earlier last night. 24. The person who is knocking on our door _______ be Nam. He said he would come at 3. Correct answer: must Explanation: The sentence implies that it's highly likely or probable that the person knocking on the door is Nam, based on the fact that he said he would come at 3. 25. _______ you go exploring the jungle with us? Correct answer: Will Explanation: The sentence is an invitation, and the correct answer is "will you" which is a polite way to ask someone if they want to do something. Let me know if you have any questions or need further clarification on any of these exercises!