He said to me, "Which book do you want?" বাক্যের Indirect Speech হচ্ছে-
He said to me which book I wanted
He asked to me which book I wanted
He said me which book I wanted
He asked me which book I wanted
'You should drive the car at a speed compatible --- safety.' বাক্যের শূন্যস্থান সঠিক শব্দ বসবে-
For
towards
at
with