My brother left home five years ago. I ______ nothing from him up to now.

(单选题)I find ______ pen on the ground. Whose is ______ pen? (单选题)—Jack, ______ you ride a bike?—Yes, I can. (单选题)—Do you think the ______ of this skirt suits me?—Of course! (单选题)—Do you like ______？—No. I like blue. (单选题)It can be concluded from Para. 12 that the author thinks awa (单选题)According to Para. 8, one difference between scientists and (单选题)Which of the following statements best sums up Para. 6? (单选题)According to Para. 4, what would happen to award winning wri (单选题)What is the difficulty confronting researchers of facial-rec (单选题)What is said to be a shortcoming of facial-recognition machi