Ребят,помогите пожалуйста.

1.Fill in the gaps.Choose one of three options below.
1.1 _____ a giant panda is first born,it is tiny.It weighs between four and six ounces and is about the 1.2 ______ of a stick of butter.At birth,it it pink,blind,helpless and hairless.During this time,the mother cares for it closely,often cradling it in her paw and keeping it close to her chest.The cub 1.3. _______ its eyes until it is six week old and it starts walking when it is three months.
Cubs nurse for about nine months but they stay with their mothers for a long time after that.In fact,it 1.4. _____ be up to three years before a giant panda cub starts living 1.5.____

1.1 A) While B) If C) When
A) height B) size C) measure
A) opens B) doesn't open C) not opens
A) should B) must C) can
A) its life B) itself C) on this own