u :6
the nile is ( increible - incredibly ) long

how ( height - hih -long ) is the giant sequoia

if wood is heated ( wastes-fumses)are produced

he is believed (to promotion - to have got promotion )in a short time

i cant come to schoole tomorrow i ( will visit - am visiting ) my aunt

i havent talked to him ( scince- for ) days

she ( has gone- has been ) to lonon , now she is in cairo

she waited for the guests until they ( arrive- had arrived- have arrive )

i (am taking - take )an english exam this year

as soon as we arrived the ilsson (had begun-began)j

find the mistake :

metals expand if they will be heated

i