"I'm having a study group session tomorrow. __ Which is the best invitation to complete the sentence? A Would you like to join us B You must come C You have to attend D You going

【Explanation】: The question is asking for the best invitation to complete the sentence. An invitation should be polite and inviting, not commanding or obligatory. Option A, "Would you like to join us?" is a polite and open-ended invitation, making it the best choice. Option B, "You must come" and Option C, "You have to attend" are both commanding and make the invitation feel obligatory, which is not ideal for a study group. Option D, "You going" is grammatically incorrect and does not form a coherent invitation. Therefore, the best choice is Option A. 【: A