1.it ( hope \is said \thinks ) that ha noi is the most historic city in viet nam 2.my grandmother is not sure ( what \if\how) to use this new washing machidc 3. This is ( the better\the best\the scond best) food i've ever caten in this country 4.how long (are you learning\do you learn\have you learnt) English "For 10 year" 5.i found the letter in my bag.'I ( forgot\had forgotten\would forget) to post it. 6.does he tell ,you how he is getting (on with \on of \out of) his new colleagues? 7.choose the word whose underlined part is pronounced differently: heart\treat\beat 8.choose the word which has a different stress pattern: surpise\imagine\violence