We ( have) an English at the moment,please ( not disturb)us
-> are having - don't disturb
Ann( cook ) her dinner now ? I (want) to ask her something about the English exercise
-> Is Ann cooking - want
Tom (have ) many exercise to do at weekends. He (sit) in his room doing exercises at present
-> has - is sitting
The man over there ( cut) the trees down now
-> is cutting
How many subjects you (study) at school now ? We (study) 13 subjects
-> are studying
Who you ( talk ) to on the phone now , Ann? I (talk ) to my brother
-> are you talking - am talking
What you (do ) at the moment,Lan ? I (do) my homework
-> are you doing - am doing
The boy ( not/eat) anything today because he (not be)well
-> doesn't eat - isn't
How Tom (operate) this machine now?
-> is Tom operating
Look! Jack (try) his best for his car racing on the last distance now
-> is crying
My mother ( not understand) his words now
-> isn't understanding
The children (not play ) football at the moment, they (play ) badminton
-> aren't playing - are playing