Ishallneverforget________(meet)thelatePremierZhouduringhisinspectionofourfactory.
Ipreferthisdiagram________thatone.
Hardlyhadhefinishedhisspeech________theaudiencestartedcheering.
Ihavebeenstudyinghereforfouryears,bynextsummerI________.
Wewerebusy________(get)thingsreadyforthetrialproductionwhenhephonedus.
________(fail)severaltimes,theyneedsomeencouragement.
