If we don"t receive any reply by tomorrow morning, I shall have to ______ him on the phone.
【正确答案】 B
【答案解析】解析:get to意为“到达,开始”;get onto意为“与……联系,与……接触”;get on with意为“与……相处,继续做……”;get over意为“克服,原谅”。根据空格后面的on the phone(通过电话)可知,应该选用get on to。