In face of trouble, although I feel disappointed about where I am, I still think _______ about where I am going. 

 --When were the soldiers sent to the earthquake-stricken area? -- _______ the earthquake broke out.

Nowadays the roles of husband and wife are not as   defined as before, especially when both partners work and earn money for the family.

Nancy reminded me of what I should ________ have forgotten.

It’s reported that global warming is heating the planet twice as quickly as _____ feared.