اختر حرف الجر الصحيح لكل جملة مما يأتي : 1) I want to lose 5 kilogram (on, at, in) one month. 2) Could you get me this pants (on, at, in) a larger size? 3) She seems to be interested (on, at, in) Psychology. 4) I will come to pick you up (on, at, in) 2 pm tomorrow. 5) This class will be held (on, at, in) Mondays.