Can you tell me if you’re coming to the party or not? I’m not sure if I will be able to attend the meeting tomorrow. If you need any help...

Can you tell me if you’re coming to the party or not? I’m not sure if I will be able to attend the meeting tomorrow. If you need any help, please let me know. She asked me if I could lend her some money. I’m wondering whether or not the store is still open at this time. I don’t know whether I should take the bus or walk to the station. Let me know if you have any dietary restrictions. He’s trying to decide whether he should take the job or not. I’m not sure if I can make it to the concert, it depends on my work schedule. Could you please let me know whether the train is running on time or it’s late?