UNIT 2 TEST 1 <I> PRONUNCIATION. CHỌN TỪ CÓ PHẦN GẠCH DƯỚI ĐƯỢC...
18/ Nowadays a lot of dangerous work
by robots.
a. hs been done b. have been done
c. is done
d. was done
18/ Nowadays a lot of dangerous work
by robots.
a. hs been done b. have been done
c. is done
d. was done