The key to exercise solutions in chapter 7b - Grammar for the textbook Spark 4 - Student's Book with authors Virginia Evans, Jenny Dooley from Express Publishing
Question
Choose the correct item.
Answer
A: Would you mind working late this evening? B: I'm sorry, but i have to pick up my kids after school.
A: Here's the report you wanted. B: It's too long. You didn't have to write so much.
A: Sorry, but I can't understand this program. B: Let me help you.
A; You mustn't touch these wires. B: Oh, I'm so sorry. I'll be more craeful.
A: I'm thinking of changing jobs. B: You should think twice before you do that.
A: Has Fred arrived yet? B: No, he said he might not be in until the afternoon.
A: Are you coming to lunch? B: No - I have to finish this report.
A: Is it alright if I leave? B: No, you may not leave until 4 pm.
A: Where's John? B: I'm not sure. He might have gone out.
A: Is Monday afternoon OK? B: Sorry, I can't. I can meet you on Tuesday afternoon, though if it's OK with you.