----- When was the People’s Liberation Army’s Navy founded? -----It ____the April of 1949.
_______ they looked, they saw nothing but ruins after the terrible earthquake.
- Was it because of his laziness_______ he didn't do the experiment successfully? - No, it was because of his carelessness.
The volunteers will visit the primary school next Monday ,_______all the students are children of migrant workers,
Children of this age should be reminded of________ to do in public places.
The houses for the low-income families_______ at present in our city will be completed next year。