When I left for the United States to study. I had butterflies in my stomach. I was nervous because I was going to ____ new place with new people and new customs. I couldn't even understand ____(they)language. Everything was different ____ my own country. There was nobody that I could talk to. I just had my husband, ____ was a new person for me, too.

    It was a sad moment when I had to say goodbye to my family and friends. I didn't want ____(leave)my hometown because I ____(grow) up there and had wonderful ____(memory) of the place. So, ____ (think)about all these changes made me nervous and I was ____(worry)about my new life. But studying abroad was a decision that I made myself. I had to continue and accept the challenge. I looked forward to ____(visit)my family in the summer vacation.

等比数列a₁,a₂,a₃的和为定值m(m>0)，且其公比为q<0，令t=a₁a₂a₃，则t的取值范围是（  ）

等差数列$\left\{a_n\right\}$前n项和为$S_n$，且$a_1=10,a_2=9$下列错误的是（     ）