【简答题】Convert the following binary number to hexadecimal, without spaces(e.g. FF01, using uppercase, and don't input any other characters, otherwise the system will judge your answer uncorrectly) 1101 1001 ...
【多选题】Complete the following phrases using the words in the box.
A.
calling
B.
catch
C.
engaged
D.
on
E.
afraid 1 . Hold __________, please.I’ll connect you. 2. Sorry, I didn’t __________ your first name. 3. I’m__________ there’s no answer. 4. I’m__________ about the meeting tomorrow. 5. I can’t get through. Their phone’s always __________ .